Cita APA

Richards, J. C., & Jack C. Richards. (2005). Interchange. Cambridge,New York: Cambridge University Press.

Chicago Style Citation

Richards, Jack C., i Jack C. Richards. Interchange. Cambridge,New York: Cambridge University Press, 2005.

Cita MLA

Richards, Jack C., i Jack C. Richards. Interchange. Cambridge,New York: Cambridge University Press, 2005.

Atenció: Aquestes cites poden no estar 100% correctes.