You'll likely use a variety of different types of sources when researching information for your paper. The infographics on this page help explain the different types of sources in the information ecosystem.
Diagram that explains Primary, Secondary, and Tertiary Sources, as well as how they relate to Publishing and Research.
| Use a database and its limits/filters | Google the source/publication title | Check a directory |
|---|---|---|
| Most databases have a “peer- reviewed” or “refereed” limiter that you can check while searching | Check the journal’s description in “journal information” or “about this journal” to see if it is peer-reviewed/refereed | The Ulrich’s Periodical Directory database lists journals and this icon  tells you if it is peer-reviewed/refereed |
