Geneva WHO 1995 , 1995
Buku Teks
Garrett, Raymon D., 1935-
Auerbach, 1973
Buku Teks
Krauel, Jacobo
Linksbooks, [Date of publication not identified]
Buku Referensi
Montoya-Aguilar, C.
World Health Organization, 1994
Buku Teks
Gerr, Dave
International Marine / McGraw-Hill, 2009
Buku Referensi