Crain, William C,   1943. <br/><br/>
Theories of development :  concepts and applications / 
William C. Crain. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1980. 
 - 302 p. :  ill. ;  24 cm. 
<br/><br/>p. 267-283 
<br/><br/><label>ISBN: </label>0139135669 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Development psychology.