A Universal Picture ; Universal presents ; screenplay by Henri Simoun and Abraham Polonsky ; produced by Frank P. Rosenberg ; directed by Donald Siegel
CONACULTA, IMCINE, CENART, Estudios Churubusco Azteca, Centro de Capacitación Cinematográfica ; dirección de producción, Hugo Rodríguez ; guión, Flavio González Mello ; dirección, Fabián Hofman
Morgan Creek Productions, Inc. and Franchise Pictures, a Clyde Is Hungry Films/Michael Fitzgerald production ; producers, Michael Fitzgerald, Sean Penn, Elie Samaha ; screenplay writers, Jerzy Kromolowski, Mary Olson-Kromolowski ; director, Sean Penn