APA (7th ed.) Citation

(2015). GMAT math workbook (Ninth edition.). Kaplan Publishing.

Chicago Style (17th ed.) Citation

GMAT Math Workbook. Ninth edition. New York: Kaplan Publishing, 2015.

MLA (9th ed.) Citation

GMAT Math Workbook. Ninth edition. Kaplan Publishing, 2015.

Warning: These citations may not always be 100% accurate.