Dyfyniad APA

Harding, K., & Wallwork, A. (2007). International express: Upper-intermediate .Student's Book. Oxford: Oxford Univ. Press.

Dyfyniad Arddull Chicago

Harding, Keith, và Adrian Wallwork. International Express: Upper-intermediate .Student's Book. Oxford: Oxford Univ. Press, 2007.

Dyfyniad MLA

Harding, Keith, và Adrian Wallwork. International Express: Upper-intermediate .Student's Book. Oxford: Oxford Univ. Press, 2007.

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