APA (7th ed.) Citation

Soars, J., Sayer, M., & Soars, L. (2003). New headway English course: Advanced teacher's book. Oxford University Press.

Chicago Style (17th ed.) Citation

Soars, John, Mike Sayer, and Liz Soars. New Headway English Course: Advanced Teacher's Book. Oxford: Oxford University Press, 2003.

MLA (9th ed.) Citation

Soars, John, et al. New Headway English Course: Advanced Teacher's Book. Oxford University Press, 2003.