Middle age and aging :  A reader in social psychology / 
Edited by Bernice L. Neugarten. 
 - Chicago ;  London :  The University of Chicago Press,  1968. 
 - xiii,596 p.  ill. 
<br/><br/>Bibliogr. references: p. 573-596 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology--Middle age