1. Cattell, H. B. (1989). The 16PF: Personality in depth. Champaign, IL: Institute for Personality and Ability Testing, Inc.
2. Karson, M., Karson, S., & O’Dell, J. (1997). 16PF interpretation in clinical practice: A guide to the Fifth Edition. Champaign, IL: Institute for Personality & Ability Testing, Inc.
3. Karson, S., & O’Dell, J. W. (1976). A guide to the clinical use of the 16PF. Champaign, IL: Institute for Personality and Ability Testing.
4. Krug, S. E., & Johns, E. F. (1990). The 16 Personality Factor Questionnaire. In E. E. Watkins and V. L. Campbell (Eds.), Testing in counseling practice. Hillsdale, NJ: Lawrence Erlbaum Associates.
5. Meyer, R. G., & Deitsch, S. E. (1995). The clinician’s handbook (4th ed). Boston, MA: Allyn and Bacon.