^Pritchett and Kuhn, Grove Online: "He has had a greater impact on music in the 20th century than any other American composer."
^“John Cage, 79, a Minimalist Enchanted With Sound, Dies”. New York Times. ngày 13 tháng 8 năm 1992. Truy cập ngày 21 tháng 7 năm 2007. John Cage, the prolific and influential composer whose Minimalist works have long been a driving force in the world of music, dance and art, died yesterday at St. Vincent's Hospital in Manhattan. He was 79 years old and lived in Manhattan.
^Leonard, George J. (1995). Into the Light of Things: The Art of the Commonplace from Wordsworth to John Cage. University of Chicago Press. tr. 120 ("...when Harvard University Press called him, in a 1990 book advertisement, "without a doubt the most influential composer of the last half-century," amazingly, that was too modest."). ISBN978-0-226-47253-9.
^Greene, David Mason (2007). Greene's Biographical Encyclopedia of Composers. Reproducing Piano Roll Fnd. tr. 1407 ("[...] John Cage is probably the most influential... of all American composers to date."). ISBN978-0-385-14278-6.
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