Cooper, Donald R. Business research methods / Donald R. Cooper, Pamela S. Schindler. - 9th ed. - New York : McGraw-Hill Companies, Inc., 2006. - xxi, 744 p. : black and white illustrations ; 28 cm. Includes glossary, and index. ISBN: 007125515X Subjects--Topical Terms: Industrial management--Research. Dewey Class. No.: CIR 650.072 C776b 2006