APA aipamena

Richards, J. C., Hull, J., & Proctor, S. (1996). Changes: English for international communication. Cambridge: Cambridge University Press.

Chicago Style aipamena

Richards, Jack C., Jonathan Hull, và Susan Proctor. Changes: English for International Communication. Cambridge: Cambridge University Press, 1996.

MLA aipamena

Richards, Jack C., Jonathan Hull, và Susan Proctor. Changes: English for International Communication. Cambridge: Cambridge University Press, 1996.