Published tests must be used and cited according to the instructions of the owning company or person. In most circumstances materials from published tests cannot be copies or reprinted.
Unpublished tests must also be used with care and consideration. Always contact the creator for permission, and if the material is copyrighted, get that permission in writing. If the author cannot be found, try securing permission from the publisher of the article where the instrument was appended.
Researchers are required to use tests wisely. Tests should be used for the purpose they were created, in the proper environment and with ethically recruited subjects. Test administrators should have obtained proper permission from the author or copyright holder and completed any necessary training or certification.
Recommended reading...
Beloit College IRB
Assessment Literacy (from the Buros Center for Testing)
How to Cite a Psychological Test in APA Style:
APA Style Blog - A reference to a psychological test (also called a measure, scale, survey, quiz, or instrument) follows the usual who-when-what-where format.
How to Cite Test Descriptions and Test Reviews Using APA Style:
Sample citations from Mental Measurements Yearbook