Cita APA

Soars, J., & Soars, L. (2010). New headway: Beginner student's book.

Citación estilo Chicago

Soars, John, y Liz Soars. New Headway: Beginner Student's Book. 2010.

Cita MLA

Soars, John, y Liz Soars. New Headway: Beginner Student's Book. 2010.