10 Common Citation Mistakes Students Make, and How to Fix Them

The most common citation mistakes are small and repetitive: mixed styles, missing citations for paraphrases, wrong et al. use and mismatches between the text and the reference list.

Each one is easy to fix once you know what to look for. This guide covers the ten errors markers see most often, explains why they happen, and shows the corrected version.

1. Mixing Citation Styles in One Paper

This happens when references are gathered from several places: a database button set to MLA, an old essay in Harvard, notes in APA. The result is a list where every entry looks slightly different.

Fix: confirm the style and edition, then reformat every entry to that one pattern. Check in-text citations too, since APA uses "p." and a comma while MLA uses only the page number.

2. Leaving Paraphrased Ideas Uncited

Many students cite quotations carefully but forget that a paraphrase or summary also needs a citation. Putting an idea in your own words does not make it your idea.

Fix: cite every borrowed idea, statistic or finding, whether quoted or not. When a paragraph draws on one source throughout, cite it at the first use and again wherever a reader might lose track of where the idea came from.

3. Using Et Al. Incorrectly

The rules differ between styles and editions, which is why this mistake is so common.

Fix: check the rule for your style and edition. Write et al. with a full stop after "al" only, and remember that the reference list usually names more authors than the in-text citation.

4. Getting Title Capitalization Wrong

Titles copied from databases often arrive in capitals or in the publisher's own style. Each citation style has its own rule.

• APA 7: sentence case for article, chapter and book titles; title case for journal names.
• MLA 9 and Chicago: title case (headline style) for all titles.
• Harvard: usually sentence case for article titles, with variation between guides.

Proper nouns and the first word after a colon keep their capital letters in sentence case.

5. Leaving Out the DOI or Writing It in the Wrong Form

A DOI is a permanent identifier that lets a reader find an article even if its web address changes. Many styles now expect it whenever one exists.

Fix: look for the DOI on the article's first page or database record. In APA 7, write it as a link, https://doi.org/10.xxxx/xxxx, with no full stop after it and no "doi:" label.

The free Bibloq citation generator can fill in an article's details from its DOI, which also confirms the number is valid.

6. Ordering the Reference List Incorrectly

Author-date styles and MLA list sources alphabetically by the first author's surname. Numbered styles such as IEEE and Vancouver list them in the order they are first cited.

• Alphabetize letter by letter, ignoring "The" or "A" at the start of a title-first entry.
• In APA, place several works by the same author in date order, oldest first.
• In numbered styles, never re-sort the list alphabetically; the numbers must match the text.

7. Citing Too Much or Too Little

Under-citing risks plagiarism. Over-citing, such as a citation after every sentence for the same source, makes writing hard to read and can hide your own analysis.

Fix: cite where the idea enters, and again when you return to it after other material. Common knowledge in your field, such as well-known dates, usually needs no citation; when unsure, cite.

8. Citations and Reference List That Do Not Match

This is the error markers notice fastest: a citation to "Patel, 2021" when the list says Patel 2020, or a list entry that is never cited.

Fix: go through the text citation by citation and tick off each matching entry. Check that spelling, year and the number of authors agree exactly. Delete or cite any entry left unticked.

9. Wrong Page Number Format

For sources without page numbers, APA uses a paragraph number or section heading, such as (Grant, 2020, para. 4).

10. Citing a Secondary Source as If You Read the Original

If you found Freud's idea in a textbook and did not read Freud, citing Freud directly misrepresents your research.

Fix: cite the source you actually read. In APA 7, write (Freud, 1923, as cited in Morris, 2019) and list only Morris (2019). Better still, find and read the original where you can.

Habits That Prevent Citation Mistakes

Most of the ten mistakes share one cause: citations were treated as a last step. A few habits during research and drafting stop them from appearing at all.

• Cite while you write. Add at least a rough citation the moment you use a source, even "(Patel 2021?)", and tidy it later.
• Save the full record at once. When you keep a source, save its DOI or URL, page range and date immediately.
• Quote with page numbers. Copy the page number with every quotation in your notes.
• Mark paraphrases in notes. Label notes as quotation, paraphrase or your own idea, so nothing loses its source.
• Check the brief first. Write the style and edition at the top of the draft before you begin.

A five-minute citation pass at the end of each writing session is far easier than a three-hour repair the night before the deadline.

Final Pre-Submission Checklist

• One style and one edition throughout.
• Every borrowed idea cited, not only quotations.
• Et al. used according to your style's rule.
• Titles in the correct case.
• DOIs included and formatted correctly.
• List ordered alphabetically or numerically as your style requires.
• Every citation matches an entry, and every entry is cited.
• Page numbers on every direct quotation.

How Bibloq Helps You Avoid Citation Mistakes

Send your paper and say which style and edition you need. An editor checks every citation against the reference list, fixes formatting, capitalization and DOIs, and flags missing details such as page numbers for you to supply.

You get tracked changes, so you can see and learn from every correction. Free revisions within the scope of your original request are included, and the price is shown before you pay.