World Health Organization, 1996
Buku Teks
Collins, Charles, author
Oxford University Press, 1994
Buku Teks
Tarimo, E., author
World Health Organization, 1991
Buku Teks
Porter-O`Grady, Tim, author
Mosby Elsevier, 2011
Buku Teks
edited by Gary E. Day and Sandra G. Leggat
Cambridge University Press, 2015
Buku Teks