Metro-Goldwyn-Mayer Studios, Inc. ; United Artists presents a Valkyrie film ; a Sidney Beckerman production ; produced by Buzz Feitshans, Barry Beckerman ; screenplay by Kevin Reynolds and John Milius ; story by Kevin Reynolds ; directed by John Milius
United Artists ; screenplay by Richard Maibaum, Johanna Harwood, Berkely Mather ; produced by Harry Saltzman and Albert R. Broccoli ; directed by Terence Young
United Artists ; [presented by] Albert R. Broccoli and Harry Saltzman ; produced by Kevin McClory ; screenplay by Richard Maibaum and John Hopkins ; directed by Terence Young
United Artists ; [presented by] Albert R. Broccoli and Harry Saltzman ; produced by Albert R. Broccoli and Harry Saltzman ; screenplay by Richard Maibaum ; directed by Peter Hunt
Metro Goldwyn Mayer ; [presented by] Albert R. Broccoli's Eon Productions Limited ; produced by Michael G. Wilson and Barbara Broccoli ; story by Neal Purvis & Robert Wade ; screenplay by Neal Purvis & Robert Wade and Bruce Feirstein ; directed by Michael Apted
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