Antezana, Fernando
World Health Organization, 1996
Buku Teks
Jacobs, Philip
Aspen Publication, 1987
Buku Teks
Eastaugh, Steven R.
Auburn House, 1981
Buku Teks
Dewar, Diane M., author
Jones & Bartlett Learning, 2011
Buku Teks
Donaldson, Cam, author
Macmillan, 1994
Buku Teks