Robinson, J. F  & Beards, P. H <br/><br/>
Using videotape 

 - Hastings house, publishers, New York  1976 
 - 163 
<br/><br/><label>ISBN: </label>0 8038 7500 2 
<br/><br/><label>Dewey Class. No.: </label>371.3358 Rob/Bea