Trends and issues in instructional design and technology / 
edited by Robert A. Reiser, John V. Dempsey. 
 - 2nd  ed. 
 - Upper Saddle River, NJ. :  Pearson,  2007. 
 - xiv, 381  p. 
<br/><br/><label>ISBN: </label>0131708058 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instructional systems--Design.<br/>Educational technology.