Dyfyniad APA

Soars, L., & Soars, J. (2001). American headway: Student book 1. Oxford: Oxford Univ. Press.

Dyfyniad Arddull Chicago

Soars, Liz, và John Soars. American Headway: Student Book 1. Oxford: Oxford Univ. Press, 2001.

Dyfyniad MLA

Soars, Liz, và John Soars. American Headway: Student Book 1. Oxford: Oxford Univ. Press, 2001.

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