Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Sciarada | 1963 | |
| Writer | Sciarada | 1963 | |
| Writer | La giusta causa | 1995 | |
| Writer | Il colpo della metropolitana - un ostaggio al minuto | 1974 | |
| Writer | Sweet Charity – Una ragazza che voleva essere amata | 1969 | |
| Writer | Arabesque | 1966 | |
| Writer | The Truth About Charlie | 2002 | |
| Writer | Il gran lupo chiama | 1964 | |
| Writer | 1776 | 1972 | |
| Writer | 1776 | 1972 | |
| Writer | Mirage | 1965 | |
| Writer | Qualcuno sta uccidendo i più grandi cuochi d'Europa | 1978 | |
| Writer | Uomini d'argento | 1977 | |
| Writer | The Taking of Pelham One Two Three | 1998 | |
| Writer | Guerra amore e fuga | 1968 |