Dyfyniad APA

Cook, R. A., Yale,Laura J, & Marqua,Joseph J. (2006). Tourism: The business of travel (3rd ed.). Pearson.

Dyfyniad Arddull Chicago

Cook, Roy A., Yale,Laura J, and Marqua,Joseph J. Tourism: The Business of Travel. 3rd ed. New Delhi: Pearson, 2006.

Dyfyniad MLA

Cook, Roy A., et al. Tourism: The Business of Travel. 3rd ed. Pearson, 2006.

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