Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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