Vernon Mckay, Donald. <br/><br/>
Colonialism in the french geographical movent 1871-1881. 

 - New York-US :   Geografical record,   1943. 
 - páginas 214-232 :   Ilustraciones blanco y negro 
 - Irregular 
 - Vol. XXXIII, no. 2(Apr. 1943) 
 - The Geographical Review ;   no. 2 .
 - The Geographical Review. .