APA citiranje

Bowler, B., & Bill Bowler; Sarah Cunningham. (1999). New Headway Pronunciation Course: Upper Intermediate. Oxford: Oxford University Press.

Trích dẫn kiểu Chicago

Bowler, Bill, và Bill Bowler; Sarah Cunningham. New Headway Pronunciation Course: Upper Intermediate. Oxford: Oxford University Press, 1999.

MLA citiranje

Bowler, Bill, và Bill Bowler; Sarah Cunningham. New Headway Pronunciation Course: Upper Intermediate. Oxford: Oxford University Press, 1999.