Gunaratne, V.T. Herat
Tata McGraw-Hill, 1977
Buku Teks
Gunaratne, V.T. Herat
McGraw-Hill, 1980
Buku Teks
Regional Office for South-East Asia, 1989
Buku Teks
World Health Organizaion, Regional Office for South-East Asia, 1988
Buku Teks
edited by Michael J. Montesano
ISEAS, 2012
Buku Teks