Cita APA (7th ed.)

American Management Association, Congram, C. A., & Friedman, M. L. (1991). The AMA handbook of marketing for the service industries. American Management Association.

Cita Chicago (17th ed.)

American Management Association, Carole A. Congram, i Margaret L. Friedman. The AMA Handbook of Marketing for the Service Industries. New York: American Management Association, 1991.

Cita MLA (8th ed.)

American Management Association, et al. The AMA Handbook of Marketing for the Service Industries. American Management Association, 1991.