Trends and issues in instructional design and technology 
Edited by Robert A Reiser. 
 - Third edition. 
 -  Pearson Education, Inc.  2012 
 - ix, 397 pages 
978-0-13-271994-0
Educational technology.
371.33 T7942 2012
                        978-0-13-271994-0
Educational technology.
371.33 T7942 2012