Species
Cast and Crew, All Movie Guide: Species, All-Reviews.com: Species, Filmtracks: Species, H.R. Giger: Ghost Train Nightmare, Hollywood.com: Species, IMDb: Species (1995), Jurassic Punk: Species, MovieWeb: Species, Nitpickers Site: Species, SciFlicks.com: Species
Species II
All Movie Guide: Species II, All-Reviews.com: Species II, Hollywood.com: Species II, IMDb: Species II (1998), MovieWeb: Species II, Nitpickers Site: Species II, SciFlicks.com: Species II, Species II, Species II
Species Movie Series Reviews
Ram Samudrala's brief but pointed analysis of both Species and Species II.