APA (7th ed.) Citation

Soars, L., & Soars, J. (1998). New headway english course. Oxford University Press.

Chicago Style (17th ed.) Citation

Soars, Liz, and John Soars. New Headway English Course. Oxford: Oxford University Press, 1998.

MLA (8th ed.) Citation

Soars, Liz, and John Soars. New Headway English Course. Oxford University Press, 1998.