APA (7th ed.) Citation

Soars, L., & Soars, J. (2001). American headway 1: Workbook. Oxford University Press.

Chicago Style (17th ed.) Citation

Soars, Liz, and John Soars. American Headway 1: Workbook. Oxford: Oxford University Press, 2001.

MLA (9th ed.) Citation

Soars, Liz, and John Soars. American Headway 1: Workbook. Oxford University Press, 2001.