Hales, Steven D.
Wiley Balckwell, 2013
Buku Teks
Maritain, Jacques, 1882-1973
Rowman & Littlefield Publishers, 2005
Buku Teks
Brennan, Joseph Gerard
Harper & Row, 1967
Buku Teks
edited by John Cottingham
Blackwell, 2008
Buku Teks
Warburton, Nigel, 1962-
Routledge, 1995
Buku Teks