Citazione Stile APA (7a Edizione)

Hertzon, S. (1971). Hospitality industry cooperative training. ITT Educational Services.

Citazione stile Chigago Style (17a edizione)

Hertzon, Seymour. Hospitality Industry Cooperative Training. New York: ITT Educational Services, 1971.

Citatione MLA (9a ed.)

Hertzon, Seymour. Hospitality Industry Cooperative Training. ITT Educational Services, 1971.