Gude, K. (2002). Proficiency masterclass. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoGude, Kathy. Proficiency Masterclass. Oxford: Oxford University Press, 2002.
MLA引文Gude, Kathy. Proficiency Masterclass. Oxford: Oxford University Press, 2002.
警告：這些引文格式不一定是100％准確.