Dyfyniad APA

Soars, L., & Soars, J. (2004). American headway: Workbook. Oxford: Oxford Univ. Press.

Dyfyniad Arddull Chicago

Soars, Liz, và John Soars. American Headway: Workbook. Oxford: Oxford Univ. Press, 2004.

Dyfyniad MLA

Soars, Liz, và John Soars. American Headway: Workbook. Oxford: Oxford Univ. Press, 2004.

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