Cita APA

Cunningham, S., & Bowler, B. (1999). New headway pronunciation course: Intermediate. Oxford: Oxford University Press.

Citación estilo Chicago

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

Cita MLA

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