APA

Dittmer Paul R, Griffin G. G., . (1999). Student Workbook: Principles of Food, Beverage & Labor Cost Controls for hotels and restaurants. New York: John Wiley & Sons.

Chicago

Dittmer Paul R, Griffin Gerald G, . 1999. Student Workbook: Principles of Food, Beverage & Labor Cost Controls for hotels and restaurants. New York: John Wiley & Sons.

Harvard

Dittmer Paul R, Griffin G. G., . (1999). Student Workbook: Principles of Food, Beverage & Labor Cost Controls for hotels and restaurants. New York: John Wiley & Sons.

MLA

Dittmer Paul R, Griffin Gerald G, . Student Workbook: Principles of Food, Beverage & Labor Cost Controls for hotels and restaurants. New York: John Wiley & Sons. 1999.