The e-learning handbook :  past promises, present challenges / 
Saul Carliner and Patti Shank, editors 
 - San Francisco, CA :  Pfeiffer ,  2008 
 - 543 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>9780787978310 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer-assisted instruction<br/>Internet in education<br/>Instructional systems--Design