Aldrich, J. A. (1999). Study guide [to accompany] Introduction to hospitality by John R. Walker (2nd ed.). Prentice Hall.
Citazione stile Chigago Style (17a edizione)Aldrich, Jennifer Adams. Study Guide [to Accompany] Introduction to Hospitality by John R. Walker. 2nd ed. Upper Saddle River, N.J: Prentice Hall, 1999.
Citatione MLA (9a ed.)Aldrich, Jennifer Adams. Study Guide [to Accompany] Introduction to Hospitality by John R. Walker. 2nd ed. Prentice Hall, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.