Cita APA

Richards, J. C. 1., Hull, J., & Proctor, S. (1990). Interchange: English for international communication (1. edition.). Cambridge, Mass.: Cambridge University Press.

Citación estilo Chicago

Richards, Jack C. 1943-, Jonathan Hull, y Susan Proctor. Interchange: English for International Communication. 1. edition. Cambridge, Mass.: Cambridge University Press, 1990.

Cita MLA

Richards, Jack C. 1943-, Jonathan Hull, y Susan Proctor. Interchange: English for International Communication. 1. edition. Cambridge, Mass.: Cambridge University Press, 1990.