coproducida por Television Española, S.A. ; Iberoamericana Films Internacional, S.A. ; Sociedad Estatal Quinto Centenario ; guion y direccion, Hector Olivera
Cinemax ReelLife presents ; HBO Documentary Films presents ; a film by Fenton Bailey & Randy Barbato ; directed and produced by Fenton Bailey & Randy Barbato ; producer [Cinemax], John Hoffman ; executive producer, Sheila Nevins ; World of Wonder