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Peterson's master the GMAT 2009
Stewart, Mark Alan, (2008)
McGraw-Hill's SAT : [10 practice tests, 5 in the book, 5 more on CD-ROM]
Black, Christopher F., (2007)
Mcgraw-Hill's conquering the GMAT verbal and writing
Pierce, Douglas, (2008)
GMAT CAT : answers to the real essay questions
Stewart, Mark Alan, (1998)
30 days to the GMAT CAT : [make the most of the time you've got!]