Biagi, Shirley Media/impact : an introduction to mass media / [book] Shirley Biagi - 10th ed. - Australia : Wadsworth Cengage learning, c2012. - xxxiv, 430 p. : ill. Includes bibliographies and index ISBN: 9781111829537 Subjects--Topical Terms: Mass media LC Class. No.: P90 / .B576 2012