Tiles, J.E.
Moral measures: an introduction to ethics west and east
Routledge, 2000
Buku Teks
Irrealism in ethics
Bart Streumer.
Wiley-Blackwell , 2014
Buku Teks
Kagan, Shelly
Normative Ethics
Westview Press, 1997
Buku Teks
Franz Magnis-Suseno
Kuasa dan moral
Gramedia Pustaka Utama, 2000
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Albert, Ethel M.
Great traditions in ethics: an introduction
American Book Company, 1953
Buku Teks