Simpson, Robert S. <br/><br/>
Effective Audio-Visual :  a user's handbook / 
Robert S. Simpson . 
 - 3rd ed. 
 - Oxford :  Focal Press,  1996. 
 - viii, 255 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0240514165 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual education<br/>Audio-visual--Effectiveness
<br/><br/><label>Dewey Class. No.: </label>371.335