Citations for tests in your References or bibliography vary depending on how they are accessed.
Test from a Website:
Purring, A. (2012). Charisma and Tenacity Survey [Measurement instrument].
Retrieved from http://www.apa.org/tests/measures/instruments/surveys
Test from a Library Database:
Barks, H., & Howls, I. (2013). Directions of Generosity [Database record].
Retrieved from The McAdoo Database of Fictional Titles. http://dx.doi.org
Test in Print:
Barks, H., & Howls, I. (2013). Directions of Generosity [Database record]. Petland, MD: E & K Press.
In Text Citations, Capitalization, and Acronyms
McADoo, Timothy. (2014). APA Style Blog: How to Cite a Psychological Test in APA Style. Retrieved from http://blog.apastyle.org/apastyle/2014/02/how-to-cite-a-psychological-test-in-apa-style.html