APA Style

speak, E, L, &, T. (2005). GMAT Review: The only study guide with 800 real GMAT questions and their answers by the creators of the test. (Eleventh Edition). USA: Blackwell Publishing.

MLA Style

speak, English, Language-Study, &, Teaching-Foreign. "GMAT Review: The only study guide with 800 real GMAT questions and their answers by the creators of the test.". Eleventh Edition USA: Blackwell Publishing, 2005. Text.