Bell, Pearl. <br/><br/>
Aventuras entre intelectuales. 

 - Washington-XXU :   International Communicational Agency United States of America,   1983. 
 - p. 32-35 
 - Trimestral 
 - No. 59(1983).  
 - Facetas ;   No. 59 .
 - International Communicational Agency United States of America. .
<br/><br/><br/>Espaņol.