Kluwer Academic , 1995
Buku Teks
Ellem, Bradon, author
New South Wales University Press, 1989
Buku Teks
Zientara, Marguerite, author
Amacom, 1987
Buku Teks
Smith, Bonnie G., author
D.C. Heath, 1989
Buku Teks
World Health Organization; Caludia Gaecia-Moreno ... [and others]
World Health Organization, 2005
Buku Teks