APA (7th ed.) Citation

Bowler B. Bill & Cunningham S. Sarah. (1997). Headway. Upper-intermediate; Pronunciation. Oxford, Oxford University Press, 1997.

Chicago Style (17th ed.) Citation

Bowler B. Bill and Cunningham S. Sarah. Headway. Upper-intermediate; Pronunciation. Oxford, Oxford University Press, 1997, 1997.

MLA (9th ed.) Citation

Bowler B. Bill and Cunningham S. Sarah. Headway. Upper-intermediate; Pronunciation. Oxford, Oxford University Press, 1997, 1997.

Warning: These citations may not always be 100% accurate.