APA (7th ed.) Citation
Soars, J. a. L. (1991). Headway. Upper-Intermediate: Workbook (10.impression.). Oxford University Press.
Chicago Style (17th ed.) Citation
Soars, John and Liz. Headway. Upper-Intermediate: Workbook. 10.impression. Oxford: Oxford University Press, 1991.
MLA (9th ed.) Citation
Soars, John and Liz. Headway. Upper-Intermediate: Workbook. 10.impression. Oxford University Press, 1991.
Warning: These citations may not always be 100% accurate.