Abbatt, Fred, author
Macmillan, 1988
Buku Teks
Fell-Carlson, Deborah L., author
Thomson/Delmar Learning, 2008
Buku Teks
Abbatt, Fred, author
World Health Organization , 1980
Buku Teks
Faulkner, Ann, author
Chapman & Hall, 1995
Buku Teks
Purnell, Larry D., author
F.A. Davis, 2005
Buku Teks