Human Motivation / 
Robert Franken E. 
 - 5th ed. 
 - Australia :  Wadsworth Thompson Learning ,  2002. 
 - xv,462 p.;  ill. 
<br/><br/><label>ISBN: </label>0534555306 
<br/><br/><label>LC Class. No.: </label>BF503  / .F72 2002