Trends and issues in instructional design and technology / 
edited by Robert A. Reiser and John V. Dempsey 
 - Fourth Edition 
 - x, 358 pages ;  27 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780134235462 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instructional systems--Design<br/>Educational technology