Principles of instructional design / 
Robert M. Gagné ... [et al.]. 
 - 5th ed. 
 - Belmont, CA :  Thomson/Wadsworth  c2005. 
 - xvii, 387 p. :  ill. ;  25 cm. 
<br/><br/> Previous edition entered under Robert Mills Gagné. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0534582842 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instructional systems--Design.<br/>Learning.
<br/><br/><label>LC Class. No.: </label>LB1028.38  / .G34 2005 
<br/><br/><label>Dewey Class. No.: </label>