Παραπομπή APA

Walker,John R. (2002). Introduction to hospitality (3.). Prentice Hall.

Παραπομπή Chicago Style

Walker,John R. Introduction to Hospitality. 3. New Jersey: Prentice Hall, 2002.

Παραπομπή MLA

Walker,John R. Introduction to Hospitality. 3. Prentice Hall, 2002.