Keuth, Herbert
Cambridge University Press, 2005
Buku Teks
Keuth, Herbert, 1940-
Cambridge University Press, 2005
Buku Teks
edited by John K. Ryan
The Catholic University of America Press, 1963
Buku Teks
edited by John Herman Randali, Justus Buchler
Barnes & Noble, 1950
Buku Teks
Chen, Liu-Fu
Philosophical Library, 1948
Buku Teks