^Ebert, Roger (September 15, 1996). "Great Movies: Casablanca". RogerEbert.com. Diarsipkan dari versi asli tanggal August 11, 2015. Diakses tanggal 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 WilsonParameter |url-status= yang tidak diketahui akan diabaikan (bantuan)
^Thomas Schatz, Boom and Bust: American Cinema in the 1940s Uni of California Press, 1999 p. 218
^ 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