Cita APA

Richards, J. C., & O'Sullivan, K. (2007). Tune in 1: Learing english through listening : student book. Oxford: Oxford Univ. Press.

Citación estilo Chicago

Richards, Jack C., y Kerry O'Sullivan. Tune in 1: Learing English Through Listening : Student Book. Oxford: Oxford Univ. Press, 2007.

Cita MLA

Richards, Jack C., y Kerry O'Sullivan. Tune in 1: Learing English Through Listening : Student Book. Oxford: Oxford Univ. Press, 2007.