Tiles, J.E.
Moral measures: an introduction to ethics west and east
Routledge, 2000
 Buku Teks SO
Franz Magnis-Suseno
Kuasa dan moral
Gramedia Pustaka Utama, 2000
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Smith, Michael
Ethics and the a priority: selected essays on moral psychology and meta-ethics
Cambridge University Press , 2004
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Albert, Ethel M.
Great traditions in ethics: an introduction
American Book Company, 1953
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Readings in ethical theory
selected and edited by Wilfrid Sellars and John Hospers
Appleton-Century-Crofts, 1952
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