APA (7e ed.) Bronvermelding

Soars, L., & Soars, J. (1998). New headway english course. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Soars, Liz, en John Soars. New Headway English Course. Oxford: Oxford University Press, 1998.

MLA (8e ed.) Bronvermelding

Soars, Liz, en John Soars. New Headway English Course. Oxford University Press, 1998.