Azar, B. S. (2001). Understanding and Using English Grammar (3rd ed.). New York: White Plains.
Trích dẫn kiểu ChicagoAzar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. New York: White Plains, 2001.
MLA CitationAzar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. New York: White Plains, 2001.
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