Larvor, Brendan
Routledge, 1998
Buku Teks
Colyvan, Mark, author
Cambridge University Press, 2012
Buku Teks
Bortolotti, Lisa, author
Polity Press, 2008
Buku Teks
Schumaker, Paul, author
Blackwell Publishing, 2008
Buku Teks
Losee, John, author
Oxford University Press ,
Buku Teks