Richards, J. C. (2005). Interchange: Class Audio Level 3 (Tercera Edición.). Cambridge: Cambridge University Press.
Chicago Style CitationRichards, Jack C. Interchange: Class Audio Level 3. Tercera Edición. Cambridge: Cambridge University Press, 2005.
MLA CitationRichards, Jack C. Interchange: Class Audio Level 3. Tercera Edición. Cambridge: Cambridge University Press, 2005.
Warning: These citations may not always be 100% accurate.