APA引文

Oxenden, C., & Koenig, C. L. (2001). English file: Upper-Intermediate workbook. Oxford: Oxford Univ. Press.

Trích dẫn kiểu Chicago

Oxenden, Clive, và Christina Latham Koenig. English File: Upper-Intermediate Workbook. Oxford: Oxford Univ. Press, 2001.

MLA引文

Oxenden, Clive, và Christina Latham Koenig. English File: Upper-Intermediate Workbook. Oxford: Oxford Univ. Press, 2001.

警告：這些引文格式不一定是100％准確.