House, R., Gude, K., & Duckworth, M. (2002). Proficiency masterclass: Teacher's book. Oxford: Oxford University Press.
Chicago Style CitationHouse, Roger, Kathy Gude, and Michael Duckworth. Proficiency Masterclass: Teacher's Book. Oxford: Oxford University Press, 2002.
MLA CitationHouse, Roger, Kathy Gude, and Michael Duckworth. Proficiency Masterclass: Teacher's Book. Oxford: Oxford University Press, 2002.
Warning: These citations may not always be 100% accurate.