APA (7th ed.) Citation

Soars J. John & Soars L. Liz. (1997). Headway. Pre-intermediate: Workbook. Oxford, Oxford University Press, 1997.

Chicago Style (17th ed.) Citation

Soars J. John and Soars L. Liz. Headway. Pre-intermediate: Workbook. Oxford, Oxford University Press, 1997, 1997.

MLA (9th ed.) Citation

Soars J. John and Soars L. Liz. Headway. Pre-intermediate: Workbook. Oxford, Oxford University Press, 1997, 1997.