Dyfyniad APA

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

Dyfyniad Arddull Chicago

Richards, Jack C., Jonathan Hull, và Susan Proctor. Interchange: English for International Communication. New York: Cambridge University Press, 1990.

Dyfyniad MLA

Richards, Jack C., Jonathan Hull, và Susan Proctor. Interchange: English for International Communication. New York: Cambridge University Press, 1990.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.