"2008 GMAT by McGraw-Hill?s" eBook
"The GMAT is a three-and-a-half-hour writing and multiple-choice test. For many years GMAT test forms were created by Educational Testing Service (ETS), a private company based in Princeton, New Jersey. ETS is famous as the creator of the SAT. However, since January 2006, creating new GMAT test forms has been the job of ACT, Inc., an Iowa-based company that also develops a well-known college admission exam."