APA (7th ed.) Citation

Soars L. Liz, Soars J. John, & Devoy J. Jo. (2001). New Headway English Course Upper-Intermediate Workbook with key (12-th ed.). New York, Oxford University Press, 2001.

Chicago Style (17th ed.) Citation

Soars L. Liz, Soars J. John, and Devoy J. Jo. New Headway English Course Upper-Intermediate Workbook with Key. 12-th ed. New York, Oxford University Press, 2001, 2001.

MLA (9th ed.) Citation

Soars L. Liz, et al. New Headway English Course Upper-Intermediate Workbook with Key. 12-th ed. New York, Oxford University Press, 2001, 2001.