Duggan, Stephen P. <br/><br/>
The Geneva school of international studies. 

 - New York-US :   The institute of international education,   1932. 
 - páginas 4-5 
 - Irregular 
 - Vol.VII, no.4 (Jan.1932) 
 - News bulletin  ;   no.4 .
 - The institute of international education. .