APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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