Wall, G., & Mathieson, A. (2006). Tourism: Change, impacts, and opportunities (2nd ed.). Pearson Prentice Hall.
Chicago Edition CitationWall, Geoffrey, i Alister Mathieson. Tourism: Change, Impacts, and Opportunities. 2nd ed. Harlow: Pearson Prentice Hall, 2006.
Cita MLAWall, Geoffrey, i Alister Mathieson. Tourism: Change, Impacts, and Opportunities. 2nd ed. Pearson Prentice Hall, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.