APA Citation

Gude, K., & Duckworth, M. (1998). Proficiency masterclass: Workbook with answers. Oxford: Oxford University Press.

Chicago Style Citation

Gude, Kathy., and Michael Duckworth. Proficiency Masterclass: Workbook With Answers. Oxford: Oxford University Press, 1998.

MLA Citation

Gude, Kathy., and Michael Duckworth. Proficiency Masterclass: Workbook With Answers. Oxford: Oxford University Press, 1998.

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