Goodrich, L.C. <br/><br/>
Seven early century chinese voyages in the indian ocean. 

 - New York-US :   Geografical record,   1940. 
 - páginas 330-331 :   Ilustraciones blanco y negro 
 - Irregular 
 - Vol. XXX, no. 2(Apr. 1940) 
 - The Geographical Review ;   no. 2 .
 - The Geographical Review. .
<br/><br/> Artículo dentro de: History of geopgraphy and exploration.