Your country

Tools that support it use your country for local currency, number formats, units and paper size. Your choice is saved only in this browser.

Type a name or a two-letter code. Use the up and down arrow keys to move through the countries, Enter to choose one and Escape to close.

Reference List Checker & Formatter (APA, MLA, Harvard, IEEE & More)

Check each reference against the style, fix it, and match your in-text citations.

Education Works offline Uses live data Free, no sign-up

Your reference list

How to give the list

One reference per paragraph or line, up to 500. A “References” heading is fine.

Next steps

About the Reference List Checker & Formatter (APA, MLA, Harvard, IEEE & More)

Paste a reference list, or open the Word file of your essay or thesis, and every entry is checked against the style you choose — APA 7, MLA 9, Chicago 18 (notes and bibliography, or author-date), Harvard (Cite Them Right), IEEE or Vancouver — or the style the list already uses, which the checker recognises. Each entry shows what does not follow the style (full first names where the style wants initials, “and” instead of “&”, title case, a missing volume or page range, a DOI in the old “doi:” form, a hyphen instead of an en dash, “et al.” where the style lists every author) next to MySmartCoPilot’s version of it, made by the same formatters as MySmartCoPilot’s citation generators.

The list as a whole is checked too: alphabetical order or numbering, entries that appear twice, works by the same author in the same year that need a and b, and entries written in another style. With a Word file, the text before the reference list is searched for in-text citations, so you see what is cited but missing from the list, what is listed but never cited, and citations whose year differs from the list. Copy the corrected list with its italics, or download it as a Word file, plain text, BibTeX or RIS.

How to use it

  1. Paste the reference list (one entry per paragraph or line; a heading such as “References” is fine), or choose Word file (.docx) and open your document.
  2. Choose the style to check against, or leave it on Detect it from the list.
  3. Press Check the list. Read the problems for the list as a whole, then each entry: Error is something the style requires, Check is very likely wrong, Tip is worth a look.
  4. If an entry was read wrongly (an unusual layout can confuse any reader), open Correct the parts that were read wrongly, fix them and check the entry again.
  5. Optionally press Check DOIs and ISBNs online to compare each entry with the record its DOI or ISBN points to.
  6. Copy the corrected list into your document, or download it as .docx, .txt, BibTeX or RIS.

Examples

APA 7: a journal article with five problems
Input
Grady, Jacob S., Her, M., and Moreno, G. (2019). Emotions In Storybooks: A Comparison Of Storybooks That Represent Ethnic And Racial Groups In The United States. Psychology of Popular Media Culture, 8(3), 207-217. doi:10.1037/ppm0000185
Result
Check: initials, not full first names (Grady, J. S.) · Check: “&” before the last author · Check: sentence case for the article title · Check: the DOI as a link, https://doi.org/10.1037/ppm0000185 · Tip: an en dash in 207–217

MySmartCoPilot’s version: Grady, J. S., Her, M., & Moreno, G. (2019). … Psychology of Popular Media Culture, 8(3), 207–217. https://doi.org/10.1037/ppm0000185 (the journal name and volume in italics).

MLA 9: three authors
Input
Grady, Jacob S., Malina Her, and Geena Moreno. "Emotions in Storybooks." Psychology of Popular Media Culture, vol. 8, no. 3, 2019, pp. 207-17.
Result
Grady, Jacob S., et al. “Emotions in Storybooks.” Psychology of Popular Media Culture, vol. 8, no. 3, 2019, pp. 207–17.

MLA gives the first author and “et al.” for three or more authors; the checker also notes that the article has no DOI.

Vancouver: page ranges
Input
1. Grady JS, Her M, Moreno G. Emotions in storybooks. Psychol Pop Media Cult. 2019;8(3):207–217.
Result
1. Grady JS, Her M, Moreno G. Emotions in storybooks. Psychol Pop Media Cult. 2019;8(3):207-17.

Citing Medicine writes page ranges with a hyphen and drops repeated digits.

The whole list
Input
Five APA entries: Kahneman (2011), Grady et al. (2019), World Health Organization (2024), Dillard (2011), and Kahneman (2011) again
Result
Entries 2 and 4 are out of alphabetical order · entries 1 and 5 are the same source. The corrected list is sorted, with the repeat left out.

Common uses

  • A last check of an essay, dissertation or thesis bibliography before you hand it in.
  • Moving a paper to a journal that uses another style: check the list against the new style and copy the reformatted version.
  • Finding references cited in the text but missing from the list, and list entries nobody cites.
  • Teachers and supervisors checking a student’s reference list quickly.

What is checked

  • Parts the style requires: authors, year (or “n.d.”), title, journal, volume, issue and pages for articles, publisher for books and reports, the book and its editors for chapters, the university for theses, the address and access date for web pages where the style asks for one.
  • Authors: initials or full first names, “&” or “and”, and “et al.” — APA 7 lists up to 20 authors; MLA 9 uses “et al.” from three; Chicago 18 lists up to six, then three and “et al.”; IEEE lists up to six; Vancouver (ICMJE) lists six, then “et al.”.
  • Titles: sentence case or title case, quotation marks for articles and chapters, and — in Word files, where italics survive — italics for journal and book titles.
  • Identifiers and numbers: DOIs as https://doi.org/ links or “doi:” as the style writes them, “Retrieved from”, en dashes or hyphens in page ranges, and the place of publication, which APA 7 and the 13th edition of Cite Them Right no longer give.
  • The list: alphabetical order (author-date and notes styles) or numbers running 1, 2, 3 … (IEEE and Vancouver), duplicates, a and b after the year for the same author and year, and entries in another style.

In-text citations (Word files)

When you open a Word file, the reference list is taken from under its last heading named References, Reference list, Bibliography, Works Cited or similar, and the text before it, with its footnotes and endnotes, is searched for citations in the chosen style:

  • Author-date (APA, Harvard, Chicago author-date): (Grady et al., 2019, p. 210), Kahneman (2011) and groups such as (Lee & Park, 2021; WHO, 2024).
  • MLA: (Grady et al. 210).
  • Numbered (IEEE, Vancouver): [3], [1]–[4], (1, 3–5) and superscript numbers.
  • Chicago notes and bibliography: whether each first author’s surname appears in the notes.

The result lists citations with no entry, entries never cited, and citations whose year differs from the entry’s.

DOI and ISBN checks

A DOI that belongs to another work, or a year or page range copied wrongly, is one of the most common reference errors. Check DOIs and ISBNs online asks doi.org (and, for books, Open Library) for each record in turn and compares its title, year, first author, journal, volume, issue and first page with the entry. Differences are shown side by side, and Use the record’s details puts the record into the entry — after you have compared it with the work itself, because records can be wrong too.

The checker never invents a source or fills in parts from nowhere: what it cannot read, it tells you.

The style guides followed

The corrected entries come from the formatters of MySmartCoPilot’s Citation Generator, so they match its APA, MLA, Chicago, Harvard, IEEE and Vancouver output.

Limitations

  • References are read with rules, not guessed: an entry in an unusual layout can be read wrongly, and the checker then says what it could not read. Correct the parts and check the entry again.
  • Italics can only be checked in Word files; pasted text loses them.
  • Title capitalisation is checked mechanically: the sentence-case version lowercases names of people, places and organisations, so put their capitals back.
  • Journal abbreviations (IEEE, Vancouver) are not checked, and local variations of a style (especially Harvard) differ from the standard version: follow your institution’s or journal’s guide where it differs.
  • In-text citations are matched by first author and year (or by number); two works by authors with the same surname in the same year need a look by eye.
  • Up to 500 references and Word files up to 25 MB. Old .doc files must be saved as .docx first.

Privacy

Your list and your Word file are read in this browser and never uploaded; the Word file is opened in a background worker on your device. Only when you press “Check DOIs and ISBNs online” does the page send each DOI to doi.org (and the registration agency it forwards to) and each ISBN to Open Library, without cookies or a referrer. The style you choose is remembered in this browser.

Frequently asked questions

Which style does my list use?

Leave the style on Detect it from the list: each entry is compared with the patterns of the seven styles (for example (2019). after the authors in APA, vol. 8, no. 3 in MLA, quotation marks with a comma inside in IEEE, 2019;8(3):207-17 in Vancouver) and the style most entries follow is used. Entries in another style are pointed out.

Does it check that my sources are real?

Only through their DOIs and ISBNs, when you ask: the record a DOI or ISBN points to is compared with the entry. A source without either cannot be verified automatically — look it up in your library catalogue or the publisher’s site.

Why is an entry marked “Small differences” when no rule is broken?

Its punctuation or order differs from MySmartCoPilot’s version in that style. Compare the two with Show the differences: often it is a missing full stop, a comma in the wrong place or parts in another order.

Is my document uploaded?

No. The Word file is read on your device, and the checks run in your browser. Only DOIs and ISBNs are sent, and only when you press the button to check them.

Can I check footnotes in Chicago style?

The bibliography is checked like any other list, and the notes are searched for each first author’s surname to show bibliography entries that no note cites. The notes themselves are not checked against the note format.

Quick answers and tool search

Type to search tools or to get a quick answer, for example 18% of 2500. Use the up and down arrow keys to move through the results, Enter to choose, and Escape to close.