APA (7th ed.) Citation

Soars. (2003). New headway. Intermediate. Workbook without key (The new ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Soars. New Headway. Intermediate. Workbook Without Key. The new ed. Oxford: Oxford University Press, 2003.

MLA (8th ed.) Citation

Soars. New Headway. Intermediate. Workbook Without Key. The new ed. Oxford University Press, 2003.