Hall, Harrison
Wadsworth, 1986
Buku Teks
Hales, Steven D., author
Wiley Balckwell, 2013
Buku Teks
Maritain, Jacques, 1882-1973, author
Rowman & Littlefield Publishers, 2005
Buku Teks
Brennan, Joseph Gerard, author
Harper & Row, 1967
Buku Teks
edited by John Cottingham
Blackwell, 2008
Buku Teks