APA-referens (7:e uppl.)

Knowdell, R. L., & Chapman, E. N. (1993). Personal counseling (3rd ed.). Crisp Publications.

Chicago-referens (17:e uppl.)

Knowdell, Richard L., och Elwood N. Chapman. Personal Counseling. 3rd ed. Menlo Park, Calif.: Crisp Publications, 1993.

MLA-referens (9:e uppl.)

Knowdell, Richard L., och Elwood N. Chapman. Personal Counseling. 3rd ed. Crisp Publications, 1993.