Παραπομπή APA

Wall, G., & Mathieson, A. (2006). Tourism: Change, impacts, and opportunities (2nd ed.). Pearson Prentice Hall.

Παραπομπή Chicago Style

Wall, Geoffrey, και Alister Mathieson. Tourism: Change, Impacts, and Opportunities. 2nd ed. Harlow: Pearson Prentice Hall, 2006.

Παραπομπή MLA

Wall, Geoffrey, και Alister Mathieson. Tourism: Change, Impacts, and Opportunities. 2nd ed. Pearson Prentice Hall, 2006.