Cita APA (7a ed.)

Friesen, D. D., & Friesen, R. M. (1989). Counseling and marriage. Word publishing.

Cita Chicago Style (17a ed.)

Friesen, DeLoss David, y Ruby M. Friesen. Counseling and Marriage. Dallas [etc.]: Word publishing, 1989.

Cita MLA (9a ed.)

Friesen, DeLoss David, y Ruby M. Friesen. Counseling and Marriage. Word publishing, 1989.