Asian Development Bank, 1986
Buku Teks
World Health Organization
WHO, 2005
Buku Teks
United Nations, 1990
Buku Teks
edited by Chung H. Lee, Seiji Naya
Wsetview Press, 1988
Buku Teks
Jusuf Wanandi, author
Centre for Strategic and International Studies, 1979
Buku Teks