Salkind, Neil J. <br/><br/>
Theories of human development / 
Neil J. Salkind. 
 - 2nd ed. 
 - New York :  John Wiley & Sons,  1984. 
 - 270 p. :  ill. ;  23 cm. 
<br/><br/>262-267. 
<br/><br/><label>ISBN: </label>0471805750  RM156.73 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Developmental psychology--Philosophy.