Cita APA (7a ed.)

Soars, J., & Soars, L. (2011). New headway: Intermediate : workbook with key (4th ed.). Oxford University Press.

Cita Chicago Style (17a ed.)

Soars, John, y Liz Soars. New Headway: Intermediate : Workbook with Key. 4th ed. Oxford: Oxford University Press, 2011.

Cita MLA (9a ed.)

Soars, John, y Liz Soars. New Headway: Intermediate : Workbook with Key. 4th ed. Oxford University Press, 2011.