The Philosophy of the environment
edited by Timothy D.J. Chappell
Edinburgh University, 1997
 Buku Teks SO
Shipka, Thomas A.
Philosophy: paradox and discovery
McGraw-Hill, 1996
 Buku Teks SO
Rachels, James, 1941-2003
The elements of moral philosophy
McGraw-Hill , 2012
 Buku Teks SO
Hutcheson, Francis
A system of moral philosophy : Volume 1
Cambridge University Press, 2014
 eBooks
Dua, Mikhael
Teaching philosophy as basic course a personal reflection
Pusat Pengembangan Etika Unika Atma Jaya, 2015
 Artikel Jurnal