APA (7e ed.) Bronvermelding

Bowler, B., & Parminter, S. (2001). New headway pronunciation: Pre-intermediate. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Bowler, Bill, en Sue Parminter. New Headway Pronunciation: Pre-intermediate. Oxford: Oxford University Press, 2001.

MLA (9e ed.) Bronvermelding

Bowler, Bill, en Sue Parminter. New Headway Pronunciation: Pre-intermediate. Oxford University Press, 2001.