Gude, K., & Duckworth, M. (2002). Proficiency masterclass: Student's book. Oxford: Oxford University Press.
Citación estilo ChicagoGude, Kathy, and Michael Duckworth. Proficiency Masterclass: Student's Book. Oxford: Oxford University Press, 2002.
Cita MLAGude, Kathy, and Michael Duckworth. Proficiency Masterclass: Student's Book. Oxford: Oxford University Press, 2002.
Precaución: Estas citas no son 100% exactas.