edited by John Herman Randali, Justus Buchler
Barnes & Noble, 1950
Buku Teks
Pojman, Louis P.
Thomson Wadsworth, 2006
Buku Teks
Goldman, Alvin I.
MIT Press, 1993
Buku Teks
Pisarev, Dmitry
Foreign Languages Publishing House, 1958
Buku Teks
edited by Herbert Morris
Stanford University Press, 1961
Buku Teks