DeFleur, Melvin L. 1923- Understanding mass communication / Melvin L. DeFleur and Everette E. Dennis - 4th ed. - Boston : Houghton Mifflin, c1991. - xiv, 637 p. : ill.,ables ; 26 cm. Includes bibliographical references and index. ISBN: 0395472725 LCCN: 90083061 Subjects--Topical Terms: Mass media--United States. Dewey Class. No.: 070