APA
Dittmer P. R. &. G. G. G., . (1979). Principles of food, beverage, & labour cost controls. Boston: .
Chicago
Dittmer Paul R & Griffin Gerald G, . 1979. Principles of food, beverage, & labour cost controls. Boston: .
Harvard
Dittmer P. R. &. G. G. G., . (1979). Principles of food, beverage, & labour cost controls. Boston: .
MLA
Dittmer Paul R & Griffin Gerald G, . Principles of food, beverage, & labour cost controls. Boston: . 1979.