Cita APA (7a ed.)
Soars, L., Soars, J., & Devoy, J. (1998). New Headway English course. Upper-intermediate. Woorkbook with key (1. publish., [dotlač].). Oxford University Press.
Cita Chicago Style (17a ed.)
Soars, Liz, John Soars, y Jo Devoy. New Headway English Course. Upper-intermediate. Woorkbook with Key. 1. publish., [dotlač]. Oxford: Oxford University Press, 1998.
Cita MLA (9a ed.)
Soars, Liz, et al. New Headway English Course. Upper-intermediate. Woorkbook with Key. 1. publish., [dotlač]. Oxford University Press, 1998.
Precaución: Estas citas no son 100% exactas.