Citazione Stile APA (7a Edizione)

Richards, J. C. (1990). The language teaching matrix. Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Richards, Jack C. The Language Teaching Matrix. Cambridge [England] ; New York: Cambridge University Press, 1990.

Citatione MLA (8a ed.)

Richards, Jack C. The Language Teaching Matrix. Cambridge University Press, 1990.