Dyfyniad APA

Oxenden, C., Clandfrield, L., Koenig, C. L., Seligson, P., & Target, F. (2008). American English File: Teacher's book 1. Oxford: Oxford Univ. Press.

Dyfyniad Arddull Chicago

Oxenden, Clive, Lindsay Clandfrield, Christina Latham Koenig, Paul Seligson, và Francesca Target. American English File: Teacher's Book 1. Oxford: Oxford Univ. Press, 2008.

Dyfyniad MLA

Oxenden, Clive, et al. American English File: Teacher's Book 1. Oxford: Oxford Univ. Press, 2008.

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