Cita APA (7a ed.)

Richards, J. C. (1999). The language teaching matrix (1st ed., 7th printing.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Richards, Jack C. The Language Teaching Matrix. 1st ed., 7th printing. Cambridge [etc.]: Cambridge University Press, 1999.

Cita MLA (9a ed.)

Richards, Jack C. The Language Teaching Matrix. 1st ed., 7th printing. Cambridge University Press, 1999.