APA (7th ed.) Citation

Soars & Devoy. (1998). New headway English course. Upper-Intermediate. Workbook. Oxford University Press.

Chicago Style (17th ed.) Citation

Soars and Devoy. New Headway English Course. Upper-Intermediate. Workbook. Oxford: Oxford University Press, 1998.

MLA (8th ed.) Citation

Soars and Devoy. New Headway English Course. Upper-Intermediate. Workbook. Oxford University Press, 1998.

Warning: These citations may not always be 100% accurate.