Zikmund, william G. Business research methods / by Barry J, Babin, Jon C. , Carr, and Mitch Griffin. - 9th ed. - USA : south western, c2013. - xxv, 670 p . : ill. ; 28 cm. Includes index. ISBN: 9781111826925 Subjects--Topical Terms: Business--Research--Methodology. Dewey Class. No.: 658.0072 / ZIB