Παραπομπή APA

Dittmer, P. R. A., & Keefe, J. D. A. (2009). Principles of food, beverage and labour cost controls (9th ed.).

Παραπομπή Chicago Style

Dittmer, Paul R; Author, και J Desmond; Author Keefe. Principles of Food, Beverage and Labour Cost Controls. 9th ed. New York, John Wiley & Sons, Inc, 2009.

Παραπομπή MLA

Dittmer, Paul R; Author, και J Desmond; Author Keefe. Principles of Food, Beverage and Labour Cost Controls. 9th ed. 2009.