APA ציטוט

Firsten, R. (2004). Contemporary English: Workbook. New York, NY: McGraw-Hill ESL/EST.

Trích dẫn kiểu Chicago

Firsten, Richard. Contemporary English: Workbook. New York, NY: McGraw-Hill ESL/EST, 2004.

ציטוט MLA

Firsten, Richard. Contemporary English: Workbook. New York, NY: McGraw-Hill ESL/EST, 2004.