Spence,  Janet Taylor. <br/><br/>
The psychology of learning  and motivation  .v.1  /    
by  J.T.Spenc e. 
 - New York  :   Academic press,   1967 
<br/><br/>  Editor : 1967- K.W.SPence and J.T.Spence. 
<br/><br/><label>Dewey Class. No.: </label>152.5 PSY