What happens if I accidentally cite a retracted paper in my thesis?

If a key premise of your thesis relies on empirical findings from a retracted paper, your conclusions may be declared invalid by your defense committee. You may be required to revise your entire literature review or repeat experiments.

Can you cite a retracted paper legitimately?

Yes, but ONLY to discuss the retraction itself, the methodological flaw, or scientific integrity issues. You must explicitly state in the body text and in the reference entry that the paper has been retracted.

Where can I check if a paper has been retracted for free?

You can check papers on the Retraction Watch Database (retractiondatabase.org), PubMed (which flags retracted articles in bold red), or click the 'Crossmark' logo on publisher PDF landing pages to view active updates.

Research Integrity & Vigilance

How to Check If a Research Paper Is Retracted: Avoid Citing Fraudulent Literature

Updated: November 14, 2026 • 6 min read • Retraction Watch Protocol

The Hidden Crisis: Zombie Citations in Peer-Reviewed Literature

According to scientific bibliometric studies, over 90% of citations to retracted papers occur AFTER the official retraction notice has been issued. Researchers download a PDF from an un-updated preprint server or an institutional repository, unaware that the journal subsequently retracted the article for data fabrication, peer-review fraud, or irreproducible calculations.

Building your thesis or dissertation findings on a retracted foundational study can invalidate your entire empirical model and trigger severe scrutiny during peer review.

Why Papers Are Retracted

Academic retractions represent the ultimate formal withdrawal of a published paper by either its authors or the journal's editorial board. Primary causes cataloged in scientific integrity databases include:

Falsification / Fabrication of Data: Invented data points, image duplication in Western blots or micrographs, or synthetic cohort numbers.
Compromised Peer Review: Fake reviewer email accounts set up by paper mills to guarantee favorable reviews.
Unintentional Fatal Errors: Contaminated cell lines, broken mathematical proofs, or software calculation bugs that invert the study's primary conclusion.
Plagiarism & Text Recycling: Verbatim copying of substantial passages or figures without attribution.

3 Deterministic Steps to Check for Retraction

Never cite a PDF downloaded years ago without conducting these three verification checks:

1. The Crossmark Status Check

Major academic publishers (Elsevier, Springer Nature, Wiley, IEEE, Taylor & Francis) embed the Crossref Crossmark logo on the publisher's official HTML landing page and inside PDF headers.

Action: Click the "Check for updates" (Crossmark) button on the publisher page.

Crossmark queries Crossref's live metadata servers. If an Expression of Concern, Corrigendum, or Retraction has been filed, a prominent dialogue box displays the notice with a direct link to the formal explanation.

2. The Retraction Watch Database Query

The Retraction Watch Database (maintained in partnership with Crossref) is the world's most exhaustive repository of retracted scientific literature:

Enter the first author's surname or copy-paste the DOI into the search bar.
Review the retraction date, reasons (e.g., "Error in Analyses", "Concerns/Issues About Data"), and whether criminal investigations or institutional misconduct findings were attached.

3. PubMed and PMC Watermarks

For biomedical and life-science papers, searching the title on PubMed (pubmed.ncbi.nlm.nih.gov) provides instantaneous visual confirmation. When an article is retracted, PubMed prepends a bright red banner: "Retracted Publication" and links directly to the retraction statement.

How to Format a Retracted Paper in APA 7 (If Citing the Retraction)

If your research specifically analyzes scientific misconduct or historical errors and you must cite a retracted article, APA 7th Edition mandates an explicit warning in both the body text and the reference list:

Wakefield, A. J., Murch, S. H., Anthony, A., Linnell, J., Casson, D. M., Malik, M., ... & Walker-Smith, J. A. (1998). RETRACTED: Ileal-lymphoid-nodular hyperplasia, non-specific colitis, and pervasive developmental disorder in children. The Lancet, 351(9103), 637–641. https://doi.org/10.1016/S0140-6736(97)11096-0 (Retraction published 2010, The Lancet, 375[9713], 445)

Always write "RETRACTED:" in capital letters before the title to notify readers and automated ingestion scrapers immediately.

Audit Your Bibliography for Scientific Integrity

Paste your references into CitePure to cross-reference every cited study against authoritative Crossref, PubMed, and OpenAlex records. Protect your dissertation from toxic citations.

Audit References for Integrity →

Frequently Asked Questions

What is an Expression of Concern vs a Retraction?

An Expression of Concern is an editorial alert published by a journal when serious allegations of fraud or doubt arise, but an institutional investigation is still ongoing. A Retraction is the permanent withdrawal of the paper after conclusive findings.

Does Google Scholar remove retracted papers?

No. Google Scholar indexes web crawls automatically and frequently continues to display PDFs of retracted papers without visible warning labels, leading many students to cite them unknowingly.

How does Zotero handle retracted papers?

Zotero has integrated Retraction Watch data. If you add a paper that has been retracted into your Zotero library, a red warning bar automatically notifies you.