APA ציטוט

Jan Bell. (1992). Integrated skills (upper intermediate): Workbook with answer key. London: Heineman.

Trích dẫn kiểu Chicago

Jan Bell. Integrated Skills (upper Intermediate): Workbook With Answer Key. London: Heineman, 1992.

ציטוט MLA

Jan Bell. Integrated Skills (upper Intermediate): Workbook With Answer Key. London: Heineman, 1992.