APA (7th ed.) Citation

Bowler B. Bill & Parminter S. Sue. (1998). Headway. Pre-intermediate; Pronunciation. Oxford, Oxford University Press, 1998.

Chicago Style (17th ed.) Citation

Bowler B. Bill and Parminter S. Sue. Headway. Pre-intermediate; Pronunciation. Oxford, Oxford University Press, 1998, 1998.

MLA (9th ed.) Citation

Bowler B. Bill and Parminter S. Sue. Headway. Pre-intermediate; Pronunciation. Oxford, Oxford University Press, 1998, 1998.