Cita APA

Freire, R., Jones, M. A., Zwier,Lawrence J, & Zimmerman, C. B. (2011). Listening and speaking. Oxford Univ Press.

Citación estilo Chicago

Freire, Robert, Marguerite Ann Jones, Zwier,Lawrence J, and Cheryl Boyd Zimmerman. Listening and Speaking. Oxford ; New York: Oxford Univ Press, 2011.

Cita MLA

Freire, Robert, et al. Listening and Speaking. Oxford Univ Press, 2011.