Gude, K., & Kathy Gude; Michael Duckworth. (2002). Proficiency Masterclass: Exam practice workbook with key. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoGude, Kathy, và Kathy Gude; Michael Duckworth. Proficiency Masterclass: Exam Practice Workbook With Key. Oxford: Oxford University Press, 2002.
MLA CitationGude, Kathy, và Kathy Gude; Michael Duckworth. Proficiency Masterclass: Exam Practice Workbook With Key. Oxford: Oxford University Press, 2002.
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