Luhr, William (1995). The Maltese Falcon. Dir. John Huston. Rutgers Films in Print. New Brunswick: Rutgers UP. p. 27. ISBN978-0813522371. Retrieved August 5, 2010.
Warner 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. 22 doi:10.1080/01439689508604551
Mills, Michael (1998). "The Maltese Falcon". Palace Classic Films. moderntimes.com. Archived from the original on January 26, 2007. Retrieved February 17, 2008.
Mills, Michael (1998). "The Maltese Falcon". Palace Classic Films. moderntimes.com. Archived from the original on January 26, 2007. Retrieved February 17, 2008.