Forsyth, Frederick, 1938-
Bantam Books, 1995
Buku Teks SO
Moore, John Norton
Oceana Publications , 1992
Buku Teks SO
Centre For Strategic And International Studies, 1990
Buku Teks
Centre for Strategic and International Studies
Centre for Strategic and International Studies, 1994
Buku Teks SO
Centre for Strategic and International Studies, 1991
Buku Teks SO