International Encyclopedia of Communications /  Vol 4 
Erik Barnouw, Geroge Gerbner ...et al. 
 - New York:   Oxford University Press.  1989. 
 - 455 p,;  ill. 
<br/><br/><label>ISBN: </label>0195058054 
<br/><br/><label>LC Class. No.: </label>P87.5  / .B36 1989