Azar, B. S., & Hagen, S. A. (2006). Basic English grammar: With answer key (3rd ed.). New York: Pearson/Longman.
Chicago Stili AlıntıAzar, Betty Schrampfer, and Stacy A. Hagen. Basic English Grammar: With Answer Key. 3rd ed. New York: Pearson/Longman, 2006.
MLA AlıntıAzar, Betty Schrampfer, and Stacy A. Hagen. Basic English Grammar: With Answer Key. 3rd ed. New York: Pearson/Longman, 2006.
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