Grubrich-Simitis, Ilse
Routledge, 1997
Buku Teks
Gray, Alexander
Longmans, Green , 1948
Buku Teks
Grayson Publishing, 2007
Buku Teks
Maimon, Moses Ben (Maimonides)
Philosophical Library, 1958
Buku Teks
Cicero, E.N.P Moor
The Modern Liberary, 1951
Buku Teks