Westview Press , 1991
Buku Teks
Jusuf Wanandi
Centre for Strategic and International Studies, 1996
Buku Teks
Jusuf Wanandi
Centre for Strategic and International Studies, 1996
Buku Teks
Clune, Lori
Oxford University Press, 2016
eBooks
World Health Organization, 1987
Buku Teks