Cooper, Donald R. Business research methods / Donald R. Cooper, Pamela Schindler. - 9th ed.. - Boston, Mass. : McGraw-Hill, 2006. - xxi, 744 p. : ill. ; 28 cm. 2 CD. - McGraw-Hill/Irwin series in operations and decision sciences. . Includes bibl. references and index. ISBN: 0071244301 : SR175.00 Subjects--Topical Terms: Industrial management--Research.Business--Research. Dewey Class. No.: 658.0072 / C784 2006