Richards, J. C., Hull, J., & Proctor, S. (2005). Interchange: Teacher's edition (tercera edición.). Cambridge University Press.
Chicago Style (17th ed.) CitationRichards, Jack C., Jonathan Hull, and Susan Proctor. Interchange: Teacher's Edition. tercera edición. Cambridge: Cambridge University Press, 2005.
MLA (9th ed.) CitationRichards, Jack C., et al. Interchange: Teacher's Edition. tercera edición. Cambridge University Press, 2005.
Warning: These citations may not always be 100% accurate.