Hagemann, Gisela. <br/><br/>
Motivasyon el kitabı/ 
Gisela Hagemann ; çeviren Göktuğ Aksan. 
 - İstanbul:  Rota,  1997. 
 - 215p. 
<br/><br/><label>ISBN: </label>9757805483 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Achievement motivation
<br/><br/><label>LC Class. No.: </label>BF503