Duggan, Stephen. <br/><br/>
Decline in internationalism among students. 

 - New York-US :   The institute of international education,   1934. 
 - páginas 3-4 
 - Irregular 
 - Vol.9, no.7 (Apr.1934) 
 - News bulletin  ;   no.7 .
 - The institute of international education. .