Battaly, Heather D., 1969-
Virtue
Polity, 2015
 Buku Teks SO
Sommers, Christina
Vice & virtue in everyday life : introductory readings in ethics
Harcourt Brace College Pub., 1997
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Paul, Richard W.
Critical Thinking: Tools for taking charge of your professional and personal life
Prentice-Hall, 2002
 Buku Teks SO
Paul, Richard W.
Critical thinking tools for taking charge of your professional and personal life
Prentice-Hall, 2002
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Virtue-public and private
by James H. Billington ... [and others]; editor, Richard John Neuhaus
William B. Eerdmans, 1986
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