1 2 3 Illusions, Fantasies and Ray Harryhausen Mills, Bart. Los Angeles Times 16 Sep 1979: n30. 1 2 Clash of the Titans at the American Film Institute Catalog ↑ Clash of the Titans (1981) – BoxOfficeMojo.com Archived October 1, 2007, at the Wayback Machine. ↑ "1981 Yearly Box Office Results – BoxOfficeMojo.com". Archived from the original on May 30, 2020.