Cita APA (7a ed.)

Tolbert, E. L., & Isaacs, A. (1972). Inroduction to counseling (6th ed.). Facts on File.

Cita Chicago Style (17a ed.)

Tolbert, E. L., y Alan Isaacs. Inroduction to Counseling. 6th ed. New York, N.Y: Facts on File, 1972.

Cita MLA (9a ed.)

Tolbert, E. L., y Alan Isaacs. Inroduction to Counseling. 6th ed. Facts on File, 1972.