Emory, William Business research methods / C. William Emory. - Rev. ed. - Homewood, Illois: R. D. Irwin, 1980. - xiv, 530 p. : ill. ; 24 cm. - The Irwin series in information and decision sciences . Includes bibliography and index. ISBN: 0256022607 Subjects--Topical Terms: Industrial management--Research Dewey Class. No.: 001.42