Gaya APA

Dittmer, P, R., III, J, D, K. (2009). Principle of Food, Beverage and Labor Cost Controls (ed. 1). Canada: Wiley.

Gaya MLA

Dittmer, Paul, R.., III, J., Desmond, Keefe. "Principle of Food, Beverage and Labor Cost Controls". ed. 1 Canada: Wiley, 2009. Text.