Duggan, Stephen. <br/><br/>
On the origen of our political rights. 

 - New York-US :   Institute International Education,   1937. 
 - páginas 3-15 
 - Irregular 
 - Vol. 12, no. 5(Feb. 1937) 
 - News. Bulletin ;   no. 5 .
 - Institute of International Education. .