The best place to find a DOI number for an article is on its citation page within the database. To access this page, click on the article's title in the database. If a DOI is available, it will be listed there—though you may need to scroll down. Keep in mind that not all articles have DOIs. They are mainly assigned to scholarly articles, especially those in peer-reviewed journals. However, older publications, articles from smaller or niche journals, and non-scholarly sources like news articles or blog posts may not have a DOI.
You can also check CrossRef which is a DOI registration agency. Enter the title or other details of the article to see if it has a DOI.
For citations:
For information regarding citations, please contact the Student Success Center or go to the Citation Support Guide.
Some books have DOIs, mainly academic books, book chapters, and conference proceedings. However, many books do not, especially older ones or those from smaller publishers. Instead, books typically have an ISBN (International Standard Book Number), which is the more common identifier for books. To find a book’s DOI, check the publisher’s website, CrossRef, or academic databases.