Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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