Clark, Ruth Colvin. <br/><br/>
E-learning and the science of instruction :  proven guidelines for consumers and designers of multimedia learning / 
Ruth C. Clark and Richard E. Mayer. 
 - 3rd ed. 
 - San Francisco, CA :  Pfeiffer,  c2011. 
 - xviii, 502 p. ;  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780470874301 (hbk.) 
<br/><br/><label>LCCN: </label>2011012858 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business education.
<br/><br/><label>LC Class. No.: </label>HF1106  / .C55 2011 
<br/><br/><label>Dewey Class. No.: </label>658.312402854678  / CLA