Gyula Klima, Fritz Allhoff, Anand Vaidya
BlackWell Publishing, 2007
Buku Teks
Budziszewski, J.
Cambrigde University Press , 2014
Buku Teks
Urvoy, Dominique
Routledge, 1991
Buku Teks
basic texts selected and edited with prefaces by Walter Kaufmann
Prentice-Hall, 1961
Buku Teks
Mayer, Frederick
American Book Company, 1950
Buku Teks