Fenichel, Otto; Rangell, Leo (1996). The psychoanalytic theory of neurosis (50th anniversary ed.). New York: Norton. p. 217. ISBN0393038904. OCLC32927192.
Fenichel, Otto; Rangell, Leo (1996). The psychoanalytic theory of neurosis (50th anniversary ed.). New York: Norton. p. 229. ISBN0393038904. OCLC32927192.