Dyfyniad APA

Soars, J., & Soars, L. (2002). American headway starter: Student book. New York: Oxford University Press.

Dyfyniad Arddull Chicago

Soars, John, và Liz Soars. American Headway Starter: Student Book. New York: Oxford University Press, 2002.

Dyfyniad MLA

Soars, John, và Liz Soars. American Headway Starter: Student Book. New York: Oxford University Press, 2002.

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