APA (7th ed.) Citation

Umar, B., & Pyrdum, C. S. (2014). Barron's GMAT: [most up-to-date review and practice tests currently available] ([18 ed.].). Barron's Educational.

Chicago Style (17th ed.) Citation

Umar, Bobby, and Carl S. Pyrdum. Barron's GMAT: [most Up-to-date Review and Practice Tests Currently Available]. [18 ed.]. Hauppauge, N.Y: Barron's Educational, 2014.

MLA (9th ed.) Citation

Umar, Bobby, and Carl S. Pyrdum. Barron's GMAT: [most Up-to-date Review and Practice Tests Currently Available]. [18 ed.]. Barron's Educational, 2014.