Company Credits
Production Companies
- Colt Produzioni Cinematografiche
- Medusa Produzione (as Medusa Distribuzione)
- Balcázar Producciones Cinematográficas (as Producciones Cinematográficas Balcázar)
Distributors
- Medusa Distribuzione (1969) (Italy) (theatrical)
- Avis (1970) (West Germany) (theatrical)
- Hispamex (1970) (Spain) (theatrical)
- Les Films Marbeuf (1970) (France) (theatrical)
- Sinister Cinema (2001) (USA) (VHS)
- KSM Film (2006) (Germany) (DVD)
- Medusa Video (Italy) (DVD)
- Mill Creek Entertainment (2009) (USA) (DVD)
- VAF-Medien-Vertrieb (all media)
Special Effects
- SES
- Sviluppo Pellicole e Stampa (SPES) (optical effects) (as S,P.E.S.)
Other Companies
- Centro Doppiaggio Televisivo (CDC) (post-synchronization) (Rome) (as C.D.C. - E.L.D.A.)
