Hilliard, Robert L. 1925-.
The broadcast century: a biography of American broadcasting /
Robert L. Hilliard, Michael C. Keith 
. - 2nd edition 
. - Boston : Focal Press,  1997 
. - ix, 310 p.  ill, tab.  25 cm. 
<br/>К.: Бібліогр. : c. 299-302, Index 
<br/><label>  ISBN: </label>0-240-80262-4