Caldwell, John C.
Academic Press, 1982
Buku Teks
Butler, William J.
International Commission of Jurists, 1977
Buku Teks
Cannadine, David
Papermac, 1996
Buku Teks
Duany, Andres, author
Norht Point Press, 2001
Buku Teks
Feith, Herbert
Equinox Pub., 2007
Buku Teks