Finding and evaluating tests and measures used in behavioral science studies can be tricky, but the library has resources to help.
Here are some video tutorials to get you started. Resources mentioned in the video are linked below, and you can hover over the information icon for more details.
Finally, for more help on using Mental Measurements Yearbook review to evaluate a test, see this guide from the Buros Center for Testing.
Finding full text of instruments (the actual test or measure, rather than a review or summary) can be a bit of a treasure hunt. Many instruments are proprietary (owned by someone) and require a fee. It completely depends on the instrument, though, so here are some tips:
To cite a review of a test (from Mental Measurements Yearbook or Tests in Print), see this guide from the publisher with examples.
To cite the test or measure itself, follow the guidelines on this APA Style Blog post, "How to cite a psychological test in APA style."
Some federal agencies and research and professional organizations have publicly-available measures. Examples include the following: