Cooper, Donald R. Business Research Methods / Donald R. Cooper, Pamela S. Schindler. - 6th ed. - New Delhi. : Tata McGraw-Hill, c1998. - xvi, 703 p. : ill. ; 24 cm. - Irwin/McGraw-Hill series in operations and decision sciences. . Includes bibliographical references and index. ISBN: 0074635700 Subjects--Topical Terms: Industrial management--Research. LC Class. No.: HD30.4 / .E47 1998 Dewey Class. No.: 658/.0072