Home › Authors › Eugene D. Jaffe M.B.A. Ph.D. 👤 Eugene D. Jaffe M.B.A. Ph.D. 1 book Books by Eugene D. Jaffe M.B.A. Ph.D. Barron's GMAT, 2007-2008 with CD-ROM (Barron's How to Prepare for the Gmat Graduate Management Admission Test) 2006