Robert  F. Mager <br/><br/>
Developing attitude towards learning / 
Mager R.F. 
 - California :  MCMLXVIII ;  1976. 
 - 102P. ; 
<br/><br/><label>ISBN: </label>082245601x 
<br/><br/><label>LC Class. No.: </label>LB 1084  / .M34 1976