Haigh, Diane, author
Academy Editions, 1995
Buku Teks
Marcus, Phillip L.
Macmillan, 1992
Buku Teks
Phoenix
Phoenix , 2011
Buku Teks
design by Saiful Anwar Yahya ; compiled by Krishna Gopal Rampal
Raja Thuraisingham, 2008
Buku Referensi
Katoh, Lynn
Foreign Affairs Association of Japan, 1962
Buku Teks