APA aipamena

Oxenden, C., & Koenig, C. L. (1999). English file: Intermediate student's book. Oxford: Oxford Univ. Press.

Chicago Style aipamena

Oxenden, Clive, và Christina Latham Koenig. English File: Intermediate Student's Book. Oxford: Oxford Univ. Press, 1999.

MLA aipamena

Oxenden, Clive, và Christina Latham Koenig. English File: Intermediate Student's Book. Oxford: Oxford Univ. Press, 1999.