Forsyth, Frederick, 1938-
Bantam Books, 1995
Buku Teks
Centre for Strategic and International Studies, 1991
Buku Teks
Centre for Strategic and International Studies, 1992
Buku Teks
Moore, John Norton
Oceana Publications , 1992
Buku Teks
Centre For Strategic And International Studies, 1990
Buku Teks