Wickramasinghe, Nilmini, editor
Springer, 2012
eBooks
edited by Victor A. Hauser
Oxford University Press, 1986
Buku Teks
edited by M.G. Quibria
Published for the Asian Develoment Bank by Oxford University Press, 1995
Buku Teks
Oakley, Peter, author
World Health Organization, 1989
Buku Teks
Hill, John W., author
Prentice-Hall, 1975
Buku Teks