Cita APA (7a ed.)

Soars, L., & Soars, J. (1997). New headway english course: Intermediate workbook. Oxford University Press.

Cita Chicago Style (17a ed.)

Soars, Liz, y John Soars. New Headway English Course: Intermediate Workbook. Oxford, Inglaterra: Oxford University Press, 1997.

Cita MLA (9a ed.)

Soars, Liz, y John Soars. New Headway English Course: Intermediate Workbook. Oxford University Press, 1997.