Cooper, Donald R. Business research methods / Donald R. Cooper, C. William Emory. - 5th ed. - Chicago : Irwin, c1995. - xix, 681 p. : ill. ; 24 cm. - The Irwin series in statistics . Rev. ed. of: Business research methods / C. William Emory. Includes bibliographical references and index. ISBN: 0256137773 Subjects--Topical Terms: Industrial management--Research. LC Class. No.: HD30.4 / .E47 1995 Dewey Class. No.: 658/.0072