Cita APA

Soars, J., Soars, L., & Wheeldon, S. (2007). New headway: Upper-intermediate : workbook with key. Oxford: Oxford University Press.

Chicago Style Citation

Soars, John., Liz Soars, i Sylvia Wheeldon. New Headway: Upper-intermediate : Workbook With Key. Oxford: Oxford University Press, 2007.

Cita MLA

Soars, John., Liz Soars, i Sylvia Wheeldon. New Headway: Upper-intermediate : Workbook With Key. Oxford: Oxford University Press, 2007.