Gopalan, C., author
World Health Organization , 1994
Buku Teks
Gopalan, C., author
World Health Organization, 1994
Buku Teks
London : IP Publishing Ltd
Majalah, Jurnal, Buletin
edited by Harold Brookfield and Yuonne Byron
United Nations University Press, 1993
Buku Teks
P.t the Centre for south-East Asia studies University of Hull 1989,
Buku Teks