- Nepenthe Productions
- Watership Productions
- Blue Sky Animation
- (United States)
- Embassy Pictures
- (uncredited)
- Goldcrest Films International
- (uncredited)
- Hollywood Classics
- (Non-US)(Current, International film production and distribution company)
- Impex Films
- (France)(current, International film production and distribution company)
- Tigon Film Distributors
- (United States)(Current, International film production and distribution company)
- AVCO Embassy Pictures
- (United States, 1978)(theatrical)
- Cinema International Corporation (CIC)
- (United Kingdom, 1978)(theatrical)
- Concorde Film
- (Netherlands, 1978)(theatrical)
- Embassy Pictures
- (United States, 1978)(theatrical)
- Svensk Filmindustri (SF)
- (Sweden, 1978)(theatrical)
- EMI Studios
- (re-recorded at)
- Columbia Records
- (soundtrack released by, uncredited)
- Dolby System
- (Dolby System®, acknowledgement)
- International Alliance of Theatrical Stage Employees (IATSE)
- (this picture made under the jurisdiction of, uncredited)
- Technicolor
- (Colour by)
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