Cita APA

Soars, L., & Soars, J. (2011). New Headway Elementary: ITutor (4ª ed.). Oxford: Oxford University Press.

Citación estilo Chicago

Soars, Liz, and John Soars. New Headway Elementary: ITutor. 4ª ed. Oxford: Oxford University Press, 2011.

Cita MLA

Soars, Liz, and John Soars. New Headway Elementary: ITutor. 4ª ed. Oxford: Oxford University Press, 2011.