Citazione Stile APA (7a Edizione)

Walker, J. R. (2009). Introduction to hospitality (5th ed.). Pearson/Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Walker, John R. Introduction to Hospitality. 5th ed. Upper Saddle River, N.J: Pearson/Prentice Hall, 2009.

Citatione MLA (9a ed.)

Walker, John R. Introduction to Hospitality. 5th ed. Pearson/Prentice Hall, 2009.