Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Producer | Carrie - Lo sguardo di Satana | 1976 | |
| Producer | Grosso guaio a Chinatown | 1986 | |
| Producer | Butch Cassidy | 1969 | |
| Producer | Carrie 2: la furia | 1999 | |
| Writer | Niente di nuovo sul fronte occidentale | 1979 | |
| Producer | Prima pagina | 1974 | |
| Producer | Mattatoio 5 | 1972 | |
| Writer | Gli amici di Eddie Coyle | 1973 | |
| Producer | Gli amici di Eddie Coyle | 1973 | |
| Writer | Stalin | 1992 | |
| Writer | George Wallace | 1997 | |
| Writer | FBI contro Al Capone | 1959 |