Trident Press, [Date of publication not identified]
Buku Referensi
Bouvier, Leon F., author
Seven Lucks Press, 1999
Buku Teks
Tanaka, Akihiko, author
International House of Japan, 2002
Buku Teks
Castells, Manuel, author
Routledge, 1994
Buku Teks
Mayall, James B. L., author
Standard Publishers, 2009
Buku Teks