Gaya APA

Dittmer, P, R., III, J, D, K. (2009). Principles of Food, Beverage, and Labor Cost Controls (Ninth Edition). New Jersey: John Wiley and Sons.

Gaya MLA

Dittmer, Paul, R.., III, J., Desmond, Keefe. "Principles of Food, Beverage, and Labor Cost Controls". Ninth Edition New Jersey: John Wiley and Sons, 2009. Text.