एपीए उद्धरण

Oxenden, C., Hudson, J., Koenig, C. L., & Seligson, P. (2008). American English File: Workbook 1. Oxford: Oxford Univ. Press.

शिकागो स्टाइल उद्धरण

Oxenden, Clive, Jane Hudson, Christina Latham Koenig, और Paul Seligson. American English File: Workbook 1. Oxford: Oxford Univ. Press, 2008.

एमएलए उद्धरण

Oxenden, Clive, Jane Hudson, Christina Latham Koenig, और Paul Seligson. American English File: Workbook 1. Oxford: Oxford Univ. Press, 2008.