https://papercitation.com/blog Explanations and checked facts about citations, from the PaperCitation staff. en-us https://papercitation.com/blog/what-et-al-means-and-when-to-use-it https://papercitation.com/blog/what-et-al-means-and-when-to-use-it Tue, 13 Oct 2026 14:05:00 GMT Et al. means and others. When APA 7 and MLA 9 want it, when they want every name, how to write it, and the mistakes that cost marks. https://papercitation.com/blog/paper-citation-how-to-cite-sources-in-your-paper https://papercitation.com/blog/paper-citation-how-to-cite-sources-in-your-paper Tue, 13 Oct 2026 13:50:00 GMT How to cite sources in a paper in APA 7 and MLA 9: in-text citations for every case, matching reference entries, a worked example and a quick-reference table. https://papercitation.com/blog/apa-vs-mla-which-citation-style-to-use https://papercitation.com/blog/apa-vs-mla-which-citation-style-to-use Tue, 13 Oct 2026 13:30:00 GMT How APA 7 and MLA 9 differ in references, in-text citations and titles, shown side by side on one real article, and how to find out which your course wants. https://papercitation.com/blog/what-a-retracted-paper-means-for-your-references https://papercitation.com/blog/what-a-retracted-paper-means-for-your-references Tue, 13 Oct 2026 13:15:00 GMT A retracted paper can still sit in your reference list. What retraction means, how to check your sources, and how APA says to cite a retracted article. https://papercitation.com/blog/how-to-find-a-doi https://papercitation.com/blog/how-to-find-a-doi Tue, 13 Oct 2026 13:00:00 GMT Where to look for an article's DOI, how to confirm it points to the right paper, how to write it, and what to do when an article has none. https://papercitation.com/blog/why-ai-tools-invent-citations https://papercitation.com/blog/why-ai-tools-invent-citations Tue, 13 Oct 2026 12:40:00 GMT AI tools can write references that look correct and do not exist. What the research found, why it happens, and a short routine for checking each reference.