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MIO: Reference Librarian


You will be reading information from many different sources during your research project. It is important to evaluate the quality of the information as you look through your results. This section is divided by type of document: books, articles, and websites. You will learn to apply the CRAP criteria to each of them.

Currency:  When was the information published? Has it been revised or updated?

Reliability:  Is the information accurate? Where does it come from?

Authority:  Who is the author and is the author qualified to write on the topic?

Purpose:  Why was this information published? Is it fact, opinion or propaganda?


Download a summary of the Four Criteria for Evaluating Sources.