Boyd, Harper W. Marketing research : text and cases / Harper W. Boyd, Jr., Ralph Westfall, Stanley F. Stasch. - 5th ed. - Homewood, Ill. : R.D. Irwin, 1981. - xiv, 693 p. : ill. ; 25 cm. Includes bibliographical references and index. ISBN: 0256025304 LCCN: 80084593 Subjects--Topical Terms: Marketing research.Marketing research--Case studies. LC Class. No.: HF5415.2 / .B65 1981