Kaplan, Inc. (2008). GMAT® verbal workbook (Fifth Edition.). Kaplan Publishing.
Chicago Style (17. basım) AtıfKaplan, Inc. GMAT® Verbal Workbook. Fifth Edition. New York: Kaplan Publishing, 2008.
MLA (8th ed.) AtıfKaplan, Inc. GMAT® Verbal Workbook. Fifth Edition. Kaplan Publishing, 2008.
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