Dyfyniad APA

Conway, D., & Shirreffs, B. (2003). On course for IELTS: Student book. Oxford University Press.

Dyfyniad Arddull Chicago

Conway, Darren, and Brett Shirreffs. On Course for IELTS: Student Book. Oxford: Oxford University Press, 2003.

Dyfyniad MLA

Conway, Darren, and Brett Shirreffs. On Course for IELTS: Student Book. Oxford University Press, 2003.

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