Petri, Herbert L. <br/><br/>
Motivation : theory and research / 
Herbert L. Petri 
 - 2nd ed 
 - California :  Wadsworth,  c1986 
 - xvi, 432 p. :  illus 
<br/><br/><label>ISBN: </label>0534053823 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motivation Psychology
<br/><br/><label>Dewey Class. No.: </label>153.8  / P495M