Cita APA

Wallwork, A., & Wallwork, A. (1997). Discussions A-Z intermediate: A resource book of speaking activities. Cambridge: Cambridge University Press.

Citación estilo Chicago

Wallwork, Adrian, y Adrian Wallwork. Discussions A-Z Intermediate: A Resource Book of Speaking Activities. Cambridge: Cambridge University Press, 1997.

Cita MLA

Wallwork, Adrian, y Adrian Wallwork. Discussions A-Z Intermediate: A Resource Book of Speaking Activities. Cambridge: Cambridge University Press, 1997.