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Reliable Sources are generally scholarly sources. Most often, they are formally written by scholars or scientists, focus on theory or research, and include citations. A scholarly article normally includes an abstract at the beginning, the name and issue of the journal in which it was published, the author’s credentials, and a list of references. If you are searching in a database, consider limiting your search to only include academic journals and peer-reviewed articles.
Primary sources can also be reliable sources and include historical documents such as memoirs, works of art, or news articles from the historical period you are researching. For more information about primary sources and where to find them, take a look at the Guide to Primary Sources.
California State University's CRAAP (Currency, Relevance, Authority, Acuracy, and Purpose) test
The Gustavus Library’s Guide to Fighting Fake News
The Gustavus Library's Guide to How the Library Works
Visit a librarian at the reference desk to help you evaluate the reliability of a source and to help you locate new sources