Richards, J. C., Hull, J., & Proctor, S. (1998). New interchange: English for international communication. New York: Cambridge University Press.
Chicago Style CitationRichards, Jack C., Jonathan Hull, i Susan Proctor. New Interchange: English for International Communication. New York: Cambridge University Press, 1998.
Cita MLARichards, Jack C., Jonathan Hull, i Susan Proctor. New Interchange: English for International Communication. New York: Cambridge University Press, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.