Metro Goldwyn Mayer ; United Artists ; a film produced by Alberto Grimaldi for PEA, Produzioni Europee Associate, Roma ; story and screenplay by Federico Fellini and Bernardino Zapponi ; directed by Federico Fellini ; additional screenplay, Brunello Rondi
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
Olive Films ; una coproduzione PEA-Produzioni Europee Associate, Les Productions Artistes associés S.A., Artemis Film GMBH ; Alberto Grimaldi presenta un film di Bernardo Bertolucci ; regia di Bernardo Bertolucci ; soggetto e sceneggiatura di Franco Arcalli, Giuseppe Bertolucci, Bernardo Bertolucci ; prodotto da Alberto Grimaldi