Durant, Will
Simon and Schuster, 1953
Buku Referensi
Rorty, Richard
Cambridge University Press, 2020
eBooks
Law, Stephen
Quersus, 2013
Buku Teks
Mulyadhi Kartanegara
Hikmah, 2005
Buku Teks SO
edited by Mary Ellen Waithe.
Kluwer Academic, 1991
Buku Teks