Richards, J. C., & Jack C.Richards. (1990). The language teaching matrix. New York: Cambridge University Press.
Trích dẫn kiểu ChicagoRichards, Jack C., và Jack C.Richards. The Language Teaching Matrix. New York: Cambridge University Press, 1990.
MLA CitationRichards, Jack C., và Jack C.Richards. The Language Teaching Matrix. New York: Cambridge University Press, 1990.
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