edited by M.G. Quibria
Published for the Asian Develoment Bank by Oxford University Press, 1995
Buku Teks
edited by Victor A. Hauser
Oxford University Press, 1986
Buku Teks
Oakley, Peter
World Health Organization, 1989
Buku Teks SO
Hill, John W.
Prentice-Hall, 1975
Buku Teks
The World Bank , 1995
Buku Teks