Cita APA (7a ed.)
Soars, J., & Soars, L. (1998). New Headway English Course. Upper-Intermediate. Teacher''s Book. Oxford University Press.
Cita Chicago Style (17a ed.)
Soars, John, y Liz Soars. New Headway English Course. Upper-Intermediate. Teacher''s Book. Oxford: Oxford University Press, 1998.
Cita MLA (9a ed.)
Soars, John, y Liz Soars. New Headway English Course. Upper-Intermediate. Teacher''s Book. Oxford University Press, 1998.
Precaución: Estas citas no son 100% exactas.