Ferrer, J., & Whalley, E. (1990). Mosaic I: A listening speaking skills book (2nd ed.). New York: Mcgraw - Hill Pub.
Trích dẫn kiểu ChicagoFerrer, Jami, và Elizabeth Whalley. Mosaic I: A Listening Speaking Skills Book. 2nd ed. New York: Mcgraw - Hill Pub, 1990.
MLA CitationFerrer, Jami, và Elizabeth Whalley. Mosaic I: A Listening Speaking Skills Book. 2nd ed. New York: Mcgraw - Hill Pub, 1990.
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