Business research methods / William G. Zikmund ... [et al.] - 9th ed. - Mason, OH : South-Western/Cengage Learning, c2013. - xxv, 670 p. : ill. ; 28 cm. Includes bibliographical references and index. ISBN: 9781111826925 (hbk.) Subjects--Topical Terms: Management--Research.Business--Research. Dewey Class. No.: 658.403072 / BUS 2013