Wimmer, Roger D. Mass media research : an introduction / Roger D. Wimmer, Joseph R. Dominick - 7th ed. - Australia : Thomson/Wadsworth, c2003 - 488 p. : ill. - Wadsworth series in mass communication and journalism . Includes bibliographical references and index ISBN: 0534562744 Subjects--Topical Terms: MASS MEDIA--RESEARCH LC Class. No.: P91.3 / W555M 2003