Chaffee, John
Thinking critically
Wadsworth/Clengage Learning , 2012
 Buku Teks SO
Fearnside, W. Ward
About thinking
Prentice-Hall, 1997
 Buku Teks SO
Ethical issues in journalism and the media
edited by Andrew Belsey and Ruth Chadwick
Routledge, 1995
 Buku Teks SO
Kimmel, Allan J.
Ethical issues in behavioral research
Blackwell, 2007
 Buku Teks SO
Ethical issues in social work
edited by Richard Hugman, David Smith
Routledge, 1996
 Buku Teks SO