Citazione Stile APA (7a Edizione)

Walker, J. R. (1999). Introduction to hospitality (2nd ed.). Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Walker, John R. Introduction to Hospitality. 2nd ed. Upper Saddle River, N.J: Prentice Hall, 1999.

Citatione MLA (9a ed.)

Walker, John R. Introduction to Hospitality. 2nd ed. Prentice Hall, 1999.