Rachels, James, 1941-2003, author
McGraw-Hill , 2012
Buku Teks
Rachels, James, 1941-2003, author
McGraw-Hill, 1998
Buku Teks
Donaldson, Thomas, author
McGraw-Hill, 1986
Buku Teks
Hutcheson, Francis, author
Cambridge University Press, 2014
eBooks
edited by Larry Nucci
Lawrence Erlbaum Associates, 2005
Buku Teks