APA সাইটেশন

Oxenden, C. (2009). American English file: Workbook 4. Oxford: Oxford University Press.

শিকাগো স্টাইলে সাইটেশন

Oxenden, Clive. American English File: Workbook 4. Oxford: Oxford University Press, 2009.

এমএলএ সাইটেশন

Oxenden, Clive. American English File: Workbook 4. Oxford: Oxford University Press, 2009.