Citazione APA

Gude, K., & Kathy Gude; Michael Duckworth. (2002). Proficiency Masterclass: Exam practice workbook with key. Oxford: Oxford University Press.

Stile di citazione Chicago

Gude, Kathy, e Kathy Gude; Michael Duckworth. Proficiency Masterclass: Exam Practice Workbook With Key. Oxford: Oxford University Press, 2002.

Citazione MLA

Gude, Kathy, e Kathy Gude; Michael Duckworth. Proficiency Masterclass: Exam Practice Workbook With Key. Oxford: Oxford University Press, 2002.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.