Colyvan, Mark, author
Cambridge University Press, 2012
Buku Teks
Whitehead, Alfred North, 1861-1947, author
Oxford University Press, 1969
Buku Teks
Hales, Steven D., author
Wiley Balckwell, 2013
Buku Teks
Maritain, Jacques, 1882-1973, author
Rowman & Littlefield Publishers, 2005
Buku Teks
Randall, John Herman, author
Barnes & Noble, 1957
Buku Teks