Shteppa, Konstantin F., author
Rutgers University Press, 1962
Buku Teks
Harvard University Press, 1955
Buku Teks
Lamont, Corliss, author
Philosophical Library, 1952
Buku Teks
Kowalski, Ronald
Routledge, 1997
Buku Teks
Oxford University Press, 1951
Buku Teks