Dyfyniad APA

Soars, J., & Soars, L. (1993). Headway Upper-Intermediate: Workbook. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Soars, John, và Liz Soars. Headway Upper-Intermediate: Workbook. Oxford: Oxford University Press, 1993.

Dyfyniad MLA

Soars, John, và Liz Soars. Headway Upper-Intermediate: Workbook. Oxford: Oxford University Press, 1993.

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