Gaya APA

Dittmer, P, R. (1984). principles of food, beverage & labor cost controls for hotels and restaurants (3). new york: Van Rostrand Reinhold Company Inc.

Gaya MLA

Dittmer, Paul, R.. "principles of food, beverage & labor cost controls for hotels and restaurants". 3 new york: Van Rostrand Reinhold Company Inc, 1984. Kesehatan Masyarakat.