Artikel Jurnal
Reynolds, E. Bruce, author
Cambridge University Press, 2005
Buku Teks
Young, Peter, author
Bison Books, 1985
Buku Referensi
edited by Brigadier Peter Young
Hamlyn, 1981
Buku Referensi
Gardner, D.H.
New York: Institute of Pasific Relations, 1950
Buku Teks