
New York Herald Tribune (16 January 1958).
On hosting a talk show, "Playboy Interview: Dick Cavett", Playboy, March 1971, vol. 18, no. 3, p. 72
New York Herald Tribune (16 January 1958).
Interview in The Observer, 1990
2000s, Kingdom of Fear: Loathsome Secrets of a Star-crossed Child in the Final Days of the American Century (2004)
Source: Living Beyond Your Feelings: Controlling Emotions So They Don't Control You
Source: Letters of Thomas Jefferson