APA (7th ed.) Citation

Soars, L., & Soars, J. (2004). New headway English course: Student's book. Oxford University Press.

Chicago Style (17th ed.) Citation

Soars, Liz, and John Soars. New Headway English Course: Student's Book. Oxford: Oxford University Press, 2004.

MLA (9th ed.) Citation

Soars, Liz, and John Soars. New Headway English Course: Student's Book. Oxford University Press, 2004.