Jaffe, Frederick S.
McGraw-Hill, 1981
Buku Teks
Callahan, Daniel
Collier-Macmillan, 1970
Buku Teks
edited by Stuart Hampshire ... [et.al.]
Cambridge University Press, 1978
Buku Teks SO
edited by Wilhelm Danca
Council for Research in Values and Philosophy, 2008
Buku Teks SO
edited by John A. Kromkowski, Robert R. Magliola and George F. McLean
Council for Research in Values and Philosophie, 2004
Buku Teks SO