The lifespan 
Lefrancois. Guy R. 
 - Sixth edition. 
 -  Wadsworth Publishing Company.  1999 
 - xxiii, 670 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>0-534-55692-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Developmental psychology.
<br/><br/><label>Dewey Class. No.: </label>155 L521 1999