APA (7th ed.) Citation

Soars & McCaul. New Headway: Upper-intermediate workbook with key (4th ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Soars and McCaul. New Headway: Upper-intermediate Workbook with Key. 4th ed. United Kingdom: Oxford University Press.

MLA (8th ed.) Citation

Soars and McCaul. New Headway: Upper-intermediate Workbook with Key. 4th ed. Oxford University Press.

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