Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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