Dyfyniad APA

Walker, R., & Harding, K. (2007). Tourism: Teacher's resource book. New York: Oxford university Press.

Dyfyniad Arddull Chicago

Walker, Robin., và Keith Harding. Tourism: Teacher's Resource Book. New York: Oxford university Press, 2007.

Dyfyniad MLA

Walker, Robin., và Keith Harding. Tourism: Teacher's Resource Book. New York: Oxford university Press, 2007.

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