Dyfyniad APA

(2001). American headway; teacher's book - 1. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

American Headway; Teacher's Book - 1. Oxford: Oxford University Press, 2001.

Dyfyniad MLA

American Headway; Teacher's Book - 1. Oxford: Oxford University Press, 2001.

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