Feather, John.  Sturges, Paul. <br/><br/>
International Encyclopedia of Information and Library Science. 

 - 2nd Ed. 
 - London :  Routledge Taylor & Francis,  2003. 
 - xxxii, 688 p. 
<br/><br/><label>ISBN: </label>9780415259019 
<br/><br/><label>Dewey Class. No.: </label>020