Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.