Παραπομπή σε μορφή APA (7η εκδ.)

Aldrich, J. A. (1999). Study guide [to accompany] Introduction to hospitality by John R. Walker (2nd ed.). Prentice Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Aldrich, Jennifer Adams. Study Guide [to Accompany] Introduction to Hospitality by John R. Walker. 2nd ed. Upper Saddle River, N.J: Prentice Hall, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Aldrich, Jennifer Adams. Study Guide [to Accompany] Introduction to Hospitality by John R. Walker. 2nd ed. Prentice Hall, 1999.