Cloninger, C.R.; Svrakic, DM; Przybeck, TR (December 1993). "A psychobiological model of temperament and character". Archives of General Psychiatry. 50 (12): 975–90. doi:10.1001/archpsyc.1993.01820240059008. PMID8250684.
Stephen Palmquist, "Faith as Kant's Key to the Justification of Transcendental Reflection", The Heythrop Journal 25:4 (October 1984), pp.442-455. A revised version of this paper appeared as Chapter V in Palmquist's book, Kant's System of Perspectives (Lanham: University Press of America, 1993).
Cloninger, C.R.; Svrakic, DM; Przybeck, TR (December 1993). "A psychobiological model of temperament and character". Archives of General Psychiatry. 50 (12): 975–90. doi:10.1001/archpsyc.1993.01820240059008. PMID8250684.