Text ( visual ) : unmediated Mass media research : an introduction / Roger D. Wimmer, Joseph R. Dominick. -- 8th ed. -- Belmont, CA : Thomson, Wadsworth , c2006. -- xii, 468 p. : ill. ; 24 cm. -- (The Wadsworth series in mass communication and journalism). -- Includes bibliographical references and indexes. -- ISBN 0534647189 ; (BA74318462) ; https://ci.nii.ac.jp/ncid/BA74318462 Author Heading(s): Wimmer, Roger D. ; Dominick, Joseph R.. -- Classification(s): LCC : P91.3 ; DC22 : 302.23072. -- Subject Heading(s): LCSH : Mass media -- Research