Dyfyniad APA

Soars, L., & Soars, J. (2003). American headway: Student book. Oxford: Oxford Univ. Press.

Dyfyniad Arddull Chicago

Soars, Liz, và John Soars. American Headway: Student Book. Oxford: Oxford Univ. Press, 2003.

Dyfyniad MLA

Soars, Liz, và John Soars. American Headway: Student Book. Oxford: Oxford Univ. Press, 2003.

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