Tull, Donald S. Marketing research : measurement & method / Donald S. Tull and Del I. Hawkins. - 6th ed. - New York : Macmillan Pub. Co., c2000. - various pages : illustrations ; 24 cm. Includes bibliographical references and indexes. ISBN: 8120309618 Subjects--Topical Terms: Marketing research.Marketing research--Case studies. Dewey Class. No.: 658.83 TUL