 La Promesa1976 · Writer | Writer |
 If You Shoot… You Live!1975 · Writer | Writer |
 When Heroes Die1970 · Writer | Writer |
 Twenty Thousand Dollars for Seven1969 · Screenplay | Screenplay |
 Hell Commandos1969 · Writer | Writer |
 A Bullet for Rommel1969 · Screenplay | Screenplay |
 ¡Cuidado con las señoras!1968 · Writer | Writer |
 Seven Into Hell1968 · Writer | Writer |
 A Nun at the Crossroads1967 · Screenplay | Screenplay |
 The Vengeance of Pancho Villa1967 · Writer | Writer |
 A Few Dollars for Django1966 · Screenplay | Screenplay |
 Two Thousand Dollars for Coyote1966 · Screenplay | Screenplay |
 The Relentless Four1965 · Screenplay | Screenplay |
 Hour of Death1964 · Screenplay | Screenplay |
 Black Angel of the Mississippi1964 · Writer | Writer |
 Los conquistadores del Pacífico1963 · Screenplay | Screenplay |
 Rosa de Lima1961 · Screenplay | Screenplay |
 El inquilino1958 · Screenplay | Screenplay |
 Habanera1958 · Writer | Writer |
 Curra Veleta1956 · Writer | Writer |
