एपीए उद्धरण

Oxenden, C. (2010). American English file: Workbook starter with answer key. Oxford: Oxford University Press.

शिकागो स्टाइल उद्धरण

Oxenden, Clive. American English File: Workbook Starter With Answer Key. Oxford: Oxford University Press, 2010.

एमएलए उद्धरण

Oxenden, Clive. American English File: Workbook Starter With Answer Key. Oxford: Oxford University Press, 2010.