Cita APA

Castle, M., Soars, J., & Soars, L. (2001). American headway: Teacher's resource book 2. Oxford: Oxford Univ. Press.

Citación estilo Chicago

Castle, Matt, John Soars, y Liz Soars. American Headway: Teacher's Resource Book 2. Oxford: Oxford Univ. Press, 2001.

Cita MLA

Castle, Matt, John Soars, y Liz Soars. American Headway: Teacher's Resource Book 2. Oxford: Oxford Univ. Press, 2001.