APA (7th ed.) Citation

May, P., & Sayer, M. (2002). Towards proficiency: Workbook. Oxford University Press.

Chicago Style (17th ed.) Citation

May, Peter, and Mike Sayer. Towards Proficiency: Workbook. Oxford: Oxford University Press, 2002.

MLA (8th ed.) Citation

May, Peter, and Mike Sayer. Towards Proficiency: Workbook. Oxford University Press, 2002.

Warning: These citations may not always be 100% accurate.