World Health Organization, 2003
Buku Teks
edit oleh M. Arif Nasution
Alumni, 1999
Buku Teks
Ho, Christine G.T, author
Kumarian Press, 2012
Buku Teks
Ea Ostetgaard, editor
Parlgrave Macmillan, 2003
Buku Teks
Ta, Chen
Secretariat Institute of Pacific Relations, 940
Buku Teks