“North by Northwest.” Wikipedia, Wikimedia Foundation, 2 Dec. 2017,
en.wikipedia.org/wiki/North_by_Northwest
“Alfred Hitchcock.” Wikipedia, Wikimedia Foundation, 10 Dec. 2017,
en.wikipedia.org/wiki/Alfred_Hitchcock
“Psycho (1960 film).” Wikipedia, Wikimedia Foundation, 1 Dec. 2017,
en.wikipedia.org/wiki/Psycho_(1960_film)
“Alfred Hitchcock.” The official website of Alfred Hitchcock,
www.alfredhitchcock.com/life-and-legacy/biography/