«How a Poor Jewish Kid From Upstate New York Became Kirk Douglas -- Hollywood's Best-Loved Gladiator». The Hollywood Reporter(engelsk). 12. mai 2012. Besøkt 1. august 2019. «Upon graduation in 1939, Douglas headed to New York, where he won a scholarship to the prestigious American Academy of Dramatic Arts. There, he befriended a younger classmate named Betty Joan Perske, who would change his life, both before and after she changed her name to Lauren Bacall.»
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Proleksis Encyclopedia, Proleksis enciklopedija-ID 53632[Hentet fra Wikidata]
Ebert, Roger. «It Runs in the Family movie review (2003) | Roger Ebert». www.rogerebert.com(engelsk). Besøkt 12. mars 2020. «I have no idea how accurately the story of "It Runs in the Family" parallels the actual story of the Douglas family, whose members play four of the characters. My guess is that most of the facts are different and a lot of the emotions are the same.»
