The National Film Board of Canada presents ; written and directed by Joe Balass ; producer, Germaine Ying Gee Wong ; a National Film Board of Canada production
una producción de Patricio Guzmán ; con la colaboración de Chris Marker, Instituto Cubano del Arte e Industria Cinematigraficos (ICAIC), John D. and Katherine T. Mac Arthur Foundation ; versión actualizada, Luis Mutti, Sergio Perez, Molinare S.A. ; productor ejecutivo Patricio Guzmán ; jefe de producción, Federico Elton ; guión y dirección, Patricio Guzmán
Winners Circle Films ; produced by National Educational Television for the Educational Television and Radio Center, in cooperation with the American Book Publishers Council