Wimmer, Roger D. Mass media research : an introduction / Roger D. Wimmer, Joseph R. Dominick. - 6th ed. - Belmont, Calif. : Wadsworth Pub., c2000. - xi, 499p. : ill. ; 24 cm. Glossary : p. 425 - 434. ISBN: 0534560075 Subjects--Topical Terms: Mass media--Research LC Class. No.: P91.3 / W71 2000