^Ebert, Roger (September 15, 1996). "Great Movies: Casablanca". RogerEbert.com. Diarkibkan daripada yang asal pada August 11, 2015. Dicapai pada August 14, 2015. Bogart, Bergman and Paul Henreid were stars, and no better cast of supporting actors could have been assembled on the Warners lot than Peter Lorre, Sidney Greenstreet, Claude Rains and Dooley Wilson
^Schatz, Thomas (1999). Boom and Bust: American Cinema in the 1940s. University of California Press. m/s. 218. ISBN9780520221307.
^ abWarner Bros financial information in "The William Shaefer Ledger". See Appendix 1, Historical Journal of Film, Radio and Television (1995) 15:sup 1, 1–31 p. 23 doi:10.1080/01439689508604551
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