Scragow, Michael (9a de julio 2012). "Rewatching Hitchcock's "The 39 Steps"". The New Yorker. Arkivita el la originalo la 26an de oktobro 2017. Alirita la 25an de oktobro 2017.
Thomas McDonald (The New York Times, 1a de aprilo 1962): "Starring in the film are Rod Taylor, Suzanne Pleshette, Jessica Tandy and 'Tippi' Hedren. Hitchcock signed Miss Hedren, a New York model, to a contract after having seen her in a television commercial. He insisted that she enclose her first name in single quotation marks, but would not explain why." "Watching 'Birds': Happy Hitchcock Films Terror-Ridden Tale", The New York Times, 1a de aprilo 1962.
Alfred Hitchcock Dies Of Natural Causes. Variety (7a de Majo 1980). “"Truffaut argues that the portly Englishman belonged “among such artists of anxiety as Kafka, Dostoyevsky and Poe."”.
Por la policeja historio: Truffaut 1983, p. 25; Taylor 1996, p. 25; Cavett, Dick (8a de junio 1972). "Interview with Alfred Hitchcock", The Dick Cavett Show, ABC, 00:06:52 En Webarchive [1] 25a de decembro 2019.
For the Snyder interview: Snyder, Tom (1973). "Alfred Hitchcock interview", Tomorrow, NBC, 00:01:55 En Webarchive [2] 3a de januaro 2020.
"Alfred Hitchcock". British Film Institute. Arkivita el la originalo la 10an de februaro 2008.
La filmo estis Lifeboat (1944). Vidu Spoto 1999, p. 267, kaj Rhys, Morgan T. (20a de septembro 2012). "Every Alfred Hitchcock Cameo". YouTube, 00:01:53 En Webarchive [13] 27a de majo 2020.
Por la policeja historio: Truffaut 1983, p. 25; Taylor 1996, p. 25; Cavett, Dick (8a de junio 1972). "Interview with Alfred Hitchcock", The Dick Cavett Show, ABC, 00:06:52 En Webarchive [1] 25a de decembro 2019.
For the Snyder interview: Snyder, Tom (1973). "Alfred Hitchcock interview", Tomorrow, NBC, 00:01:55 En Webarchive [2] 3a de januaro 2020.
La filmo estis Lifeboat (1944). Vidu Spoto 1999, p. 267, kaj Rhys, Morgan T. (20a de septembro 2012). "Every Alfred Hitchcock Cameo". YouTube, 00:01:53 En Webarchive [13] 27a de majo 2020.