Encyclopedia of distance learning / 
Caroline Howard...[et.al] 
 - Hershey;  Idea Group Reference,  2005 
 - 1 v.(various pagings) p.;  ill.  28 cm 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>591405556 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Distance education--Encyclopedias