Cita APA

Sayer, M., & Soars, J. (2007). New headway: Pre - Intermediate : Teacher's book (3rd ed.). Oxford: Oxford Univ. Press.

Citación estilo Chicago

Sayer, Mike, y John Soars. New Headway: Pre - Intermediate : Teacher's Book. 3rd ed. Oxford: Oxford Univ. Press, 2007.

Cita MLA

Sayer, Mike, y John Soars. New Headway: Pre - Intermediate : Teacher's Book. 3rd ed. Oxford: Oxford Univ. Press, 2007.