APA (7th ed.) Citation

Soars, J., Soars, L., & Wheeldon, S. (2007). New headway: Pre-intermediate workbook with key (Third edition.). Oxford University Press.

Chicago Style (17th ed.) Citation

Soars, John, Liz Soars, and Sylvia Wheeldon. New Headway: Pre-intermediate Workbook with Key. Third edition. Oxford: Oxford University Press, 2007.

MLA (9th ed.) Citation

Soars, John, et al. New Headway: Pre-intermediate Workbook with Key. Third edition. Oxford University Press, 2007.