एपीए उद्धरण

Koenig, C. L., Oxenden, C., & Seligson, P. (2013). American English file: Teacher's book. Oxford: Oxford University Press.

शिकागो स्टाइल उद्धरण

Koenig, Chistina Latham, Clive Oxenden, और Paul Seligson. American English File: Teacher's Book. Oxford: Oxford University Press, 2013.

एमएलए उद्धरण

Koenig, Chistina Latham, Clive Oxenden, और Paul Seligson. American English File: Teacher's Book. Oxford: Oxford University Press, 2013.