Zikmund, William G. Essentials of marketing research / William G. Zikmund, Barry J. Babin - 3rd ed. - Mason, Ohio : Thomson/South-Western, 2007 - xvii, 414 p. : col. ill. ; 28 cm. Includes bibliographical references (p. 405-410) and index ISBN: 9780324320879 (pbk.) 0324320876 (pbk.) RM441.71 Subjects--Topical Terms: Marketing research