Azar, B. S. (2002). Understanding and using English grammar (3rd ed.). Prentice Hall Regents.
Chicago Style (17. basım) AtıfAzar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. Upper Saddle River, NJ: Prentice Hall Regents, 2002.
MLA (8th ed.) AtıfAzar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. Prentice Hall Regents, 2002.
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