एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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