Maier, Henry William. <br/><br/>
Tres teorias sobre el desarrollo del niño  Erikson, Piaget y Sears 
Henry William Maier ; traducido por Anibal C. Leal. 
 - Buenos Aires  Amorrortu Editores  1971. 
 - 358 p. 
<br/><br/> Translation of : Three theories of child development : the contributions of Erik H. Erikson, Jean Piaget and Robert R. Sears and their applications. 
<br/><br/>Includes bibliographies.