Dyfyniad APA

Oxenden, C. (2008). American English file: Student book 1. Oxford: Oxford University.

Dyfyniad Arddull Chicago

Oxenden, Clive. American English File: Student Book 1. Oxford: Oxford University, 2008.

Dyfyniad MLA

Oxenden, Clive. American English File: Student Book 1. Oxford: Oxford University, 2008.

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