Horizonte Usa ;   No. 21 

 - Washington-XXU :   U.S. Information Agency,   1977. 
 - p. 62-64 :   il. 
 - Bimestral 
 - No. 21(1977) 
 - Horizonte Usa ;   No. 21 .
 - U.S. Information Agency. .
<br/><br/> Entrevista.