Dyfyniad APA

Soars, J. &. L., & Soars, L. (1991). Headway, Pre-Intermediate: Workbook. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Soars, John & Liz, và Liz Soars. Headway, Pre-Intermediate: Workbook. Oxford: Oxford University Press, 1991.

Dyfyniad MLA

Soars, John & Liz, và Liz Soars. Headway, Pre-Intermediate: Workbook. Oxford: Oxford University Press, 1991.

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