Cita APA

Soars, L., & Soars, J. (2009). New headway English course: Pre - Intermediate : Student's book. Oxford: Oxford Univ. Press.

Citación estilo Chicago

Soars, Liz, y John Soars. New Headway English Course: Pre - Intermediate : Student's Book. Oxford: Oxford Univ. Press, 2009.

Cita MLA

Soars, Liz, y John Soars. New Headway English Course: Pre - Intermediate : Student's Book. Oxford: Oxford Univ. Press, 2009.