Azar, B. S. (2002). Understanding and using english grammar (3rd ed.). Pearson Education.
Chicago Style (17. basım) AtıfAzar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. New York: Pearson Education, 2002.
MLA (9th ed.) AtıfAzar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. Pearson Education, 2002.
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