Tavistock Publ., 1992
Buku Teks
World Health Organization
World Health Organization, 1990
Buku Teks
edited by Tony Kendrick, Andre Tylee, Paul Freeling
Cambridge University Press, 1996
Buku Teks
Segal, Inna, author
Atria Paperback, 2010
Buku Teks
Perko, Joanne E.
Appleton & Lange , 1988
Buku Teks