American International ; [presented by] Samuel Z. Arkoff ; Orion Pictures ; produced by Elliot Schick ; written by Tim Kelly ; directed by Paul Maslansky
United Artists presents a film produced by Alberto Grimaldi ; screenplay by Age [Agenore Incrocci], Scarpelli [Furio Scarpelli], Luciano Vincenzoni and Sergio Leone ; English version by Mickey Knox ; directed by Sergio Leone
Renn Productions présente ; adaption de Claude Berri et Gerard Brach ; une coproduction Renn Productions, Films A2, RAI2, DD Productions ; un film de Claude Berri