Garrison, D. Randy, <br/><br/>
E-learning in the 21st century :  a community of inquiry framework for research and practice / 
D. Randy Garrison 
 - Third Edition 
 - xvi, 202 pages :  illustrations ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781138953550 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education, Higher--Computer network resources<br/>Education, Higher--Effect of technological innovations on<br/>Internet in higher education<br/>Distance education