Liebert, Robert M.,  1942- <br/><br/>
Developmental psychology / 
Robert M. Liebert, Rita Wicks Poulos, Gloria Strauss Marmor. 
 - Second 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  c1977. 
 - xv, 572 p. :  ill. ;  24 cm.