APA (7th ed.) Citation

House, R., Gude, K., & Duckworth, M. (2002). Proficiency masterclass: Teacher's book. Oxford University Press.

Chicago Style (17th ed.) Citation

House, Roger, Kathy Gude, and Michael Duckworth. Proficiency Masterclass: Teacher's Book. Oxford: Oxford University Press, 2002.

MLA (9th ed.) Citation

House, Roger, et al. Proficiency Masterclass: Teacher's Book. Oxford University Press, 2002.