Company Credits
Production Companies
- Casey Productions (An Anglo-Italian Co-Production) (as Casey Productions Ltd., London)
- Eldorado Films (An Anglo-Italian Co-Production) (as Eldorado Films s.r.l. Rome)
- D.L.N. Ventures Partnership (co-production) (uncredited)
Distributors
- British Film Institute (BFI) (2001) (UK) (theatrical) (re-release)
- British Lion Film Corporation (1973) (UK) (theatrical)
- Europa (1973) (Sweden) (theatrical)
- Gloria Filmverleih AG (1974) (West Germany) (theatrical)
- Indipendenti Regionali (1973) (Italy) (theatrical)
- Paramount Pictures (1973) (USA) (theatrical)
- Arcade Movie Company (1999) (Netherlands) (VHS)
- Atlantic Film (2004) (Sweden) (DVD)
- Columbia Broadcasting System (CBS) (1979) (USA) (TV) (original airing)
- Kinowelt Home Entertainment (2001) (Germany) (DVD)
- Odeon (2003) (Greece) (DVD)
- Paramount Home Video (2002) (USA) (DVD)
- Paramount Home Video (USA) (VHS)
- Paramount Home Video (USA) (all media) (laserdisc)
- Thorn EMI Video Australia (1980) (Australia) (VHS)
- Universal Pictures Benelux (2005) (Netherlands) (DVD)
- Warner Home Video (1988) (UK) (VHS)
- Warner Home Video (2002) (UK) (DVD)
Other Companies
- Edizioni CURCI (music publishing) (as Edizioni CURCI, Milan)
- Shepperton Studios (re-recorded at) (as Shepperton Studios, England)
