Bortolotti, Lisa, author
Polity Press, 2008
Buku Teks
Kymlicka, Will, author
Clarendon Press, 1990
Buku Teks
Colyvan, Mark, author
Cambridge University Press, 2012
Buku Teks
Griffiths, Paul, 1962-, author
Cambridge University Press, 2013
Buku Teks
Preiss, Julian, author
Routledge, 2013
Buku Teks