Gaya APA

Dittmer, P, R. (2003). Principles of food, beverage, and labor cost controls (7th ed). New York: John Wiley and Sons, Inc..

Gaya MLA

Dittmer, Paul, R.. "Principles of food, beverage, and labor cost controls". 7th ed New York: John Wiley and Sons, Inc., 2003. BUKU.