Richards, J. C., Hull, J., & Proctor, S. (1994). Changes: English for international communication : student's book 1. Cambridge: Cambridge University Press.
Chicago Style CitationRichards, Jack C., Jonathan Hull, and Susan Proctor. Changes: English for International Communication : Student's Book 1. Cambridge: Cambridge University Press, 1994.
MLA CitationRichards, Jack C., Jonathan Hull, and Susan Proctor. Changes: English for International Communication : Student's Book 1. Cambridge: Cambridge University Press, 1994.
Warning: These citations may not always be 100% accurate.