writing

1976
La Promesa
-
Writer
1975
School of Death
-
Story
1970
When Heroes Die
-
Writer
1969
A Bullet for Rommel
-
Story
1969
A Bullet for Rommel
-
Screenplay
1969
Hell Commandos
-
Writer
1968
Seven Into Hell
-
Writer
1968
¡Cuidado con las señoras!
-
Writer
1967
The Vengeance of Pancho Villa
-
Writer
1966
A Few Dollars for Django
-
Story
1966
A Few Dollars for Django
-
Screenplay
1966
Two Thousand Dollars for Coyote
-
Story
1966
Two Thousand Dollars for Coyote
-
Screenplay
1965
The Relentless Four
-
Screenplay
1964
Hour of Death
-
Screenplay
1964
Black Angel of the Mississippi
-
Writer
1963
Los conquistadores del Pacífico
-
Screenplay
1963
Los conquistadores del Pacífico
-
Story
1961
Rosa de Lima
-
Screenplay
1958
El inquilino
-
Screenplay