Gabriel, Ralph Henry,  1890-1987. <br/><br/>
the course of american democratic thought / 
Ralph Henry Gabriel. 
 - 3a. ed. 
 - New York :  Greenwood Press,  1986. 
 - a xiv, 508 p. ;  24 cm. 
<br/><br/>Bibliografía : p. (487-493.) 
<br/><br/><label>ISBN: </label>0313249997