Encyclopedia of community :  from the village to the virtual world / 
Karen Christensen, David Levinson, editors 
 - Thousand Oaks, CA :  Sage Publications,  2003 
 - 4 v. 
<br/><br/><label>ISBN: </label>0761925988 
<br/><br/><label>LC Class. No.: </label>R HM 756  / E56 2003