Samuel Bronston presents ; written by Fredric M. Frank and Philip Yordan ; Italian version by Diego Fabbri ; produced by Samuel Bronston ; directed by Anthony Mann ; a Samuel Bronston production in association with Dear Film Production
Warner Bros. Pictures ; Hollywood Gang Productions ; Atmosphere Entertainment ; Legendary Pictures ; Virtual Studios ; produced by Mark Canton, Bernie Goldmann, Gianni Nunnari, Jeffrey Silver ; screenplay by Zack Snyder & Kurt Johnstad and Michael B. Gordon ; directed by Zack Snyder
Twentieth Century-Fox presents ; Joseph L. Mankiewicz' [production of] ; screenplay by Joseph L. Mankiewicz, Ranald MacDougall, and Sidney Buchman ; produced by Walter Wanger ; directed by Joseph L. Mankiewicz