Dyfyniad APA

Bowler, B., & Parminter, S. (1992). Headway, Pre-Intermediate: Pronunciation. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Bowler, Bill, và Sue Parminter. Headway, Pre-Intermediate: Pronunciation. Oxford: Oxford University Press, 1992.

Dyfyniad MLA

Bowler, Bill, và Sue Parminter. Headway, Pre-Intermediate: Pronunciation. Oxford: Oxford University Press, 1992.

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