Maritain, Jacques, 1882-1973
Rowman & Littlefield Publishers, 2005
Buku Teks
Randall, John Herman
Barnes & Noble, 1957
Buku Teks
Brightman, Edgar Sheffield
Holt, Rinehart and Winston, 1961
Buku Teks
Patrick, George Thomas White
George Allen and Unwin, 1925
Buku Teks
Stone, Alison
Polity Press, 2007
Buku Teks