SEVERIN, W. J., & SEVERIN, W. J. (1997). Communication Theories Origins, Methods, Uses In The Mass Media Werner J. Severin, James W. Tankard. Longman.
Lua i Stíl Chicago (17ú heag.)SEVERIN, Werner J., agus Werner J. SEVERIN. Communication Theories Origins, Methods, Uses In The Mass Media Werner J. Severin, James W. Tankard. Longman, 1997.
Lua MLA (8ú heag.)SEVERIN, Werner J., agus Werner J. SEVERIN. Communication Theories Origins, Methods, Uses In The Mass Media Werner J. Severin, James W. Tankard. Longman, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.