Encyclopedia of distributed learning / 
Anna Distefano, Kjell Erik Rudestam, Robert J. Silverman, editors 
 - Thousand Oaks, CA :  Sage Publications,  2004       
 - xxvi, 549 p. 
<br/><br/><label>ISBN: </label>0761924515 
<br/><br/><label>LC Class. No.: </label>R LC 5211 E56 2004