The 23rd Academy Awards – 1951Academy of Motion Picture Arts and Sciences – Oscars.org. Viitattu 9.8.2021. (englanniksi)
web.archive.org
The Best 1,000 Movies Ever Made. (Perustuu teokseen The New York Times Guide to the Best 1,000 Movies Ever Made, St. Martin's Griffin 2004.) The New York Times. Arkistoitu 11.7.2016. Viitattu 9.8.2021. (englanniksi)