Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Dittmer, Paul, i J. Desmond Keefe. Principles of Food, Beverage, and Labor Cost Controls. 9th ed. Hoboken, N.J: Wiley, 2009.

Cita MLA (9th ed.)

Dittmer, Paul, i J. Desmond Keefe. Principles of Food, Beverage, and Labor Cost Controls. 9th ed. Wiley, 2009.