APA (7th ed.) Citation

Oxford University Press, Soars, J., & Soars, L. (1996). New headway english course. Oxford University Press.

Chicago Style (17th ed.) Citation

Oxford University Press, J. Soars, and L. Soars. New Headway English Course. Oxford: Oxford University Press, 1996.

MLA (8th ed.) Citation

Oxford University Press, et al. New Headway English Course. Oxford University Press, 1996.