Richards, J. C. 1., & Richards, J. C. 1. (1998). Interchange: Intro : video activity book. Cambridge: Cambridge University Press.
Chicago Style CitationRichards, Jack C. 1943-, and Jack C. 1943- Richards. Interchange: Intro : Video Activity Book. Cambridge: Cambridge University Press, 1998.
MLA CitationRichards, Jack C. 1943-, and Jack C. 1943- Richards. Interchange: Intro : Video Activity Book. Cambridge: Cambridge University Press, 1998.
Warning: These citations may not always be 100% accurate.