Cita APA

Nunan, D., & Richards, J. C. (1990). Second language teacher education. New York: Cambridge University.

Citación estilo Chicago

Nunan, David, y Jack C. Richards. Second Language Teacher Education. New York: Cambridge University, 1990.

Cita MLA

Nunan, David, y Jack C. Richards. Second Language Teacher Education. New York: Cambridge University, 1990.