Cita APA

DOFF, A., & BECKET, C. (1993). Listening 1. Canbridge University Press.

Citación estilo Chicago

DOFF, Adrian, and Carolyn BECKET. Listening 1. New York: Canbridge University Press, 1993.

Cita MLA

DOFF, Adrian, and Carolyn BECKET. Listening 1. Canbridge University Press, 1993.