Wonderling, David, author
Open University Press, 2005
Buku Teks
Antezana, Fernando
World Health Organization, 1996
Buku Teks
Kobelt, Gisela, author
Office of Health Economics, 2002
Buku Teks
Sorkin, Alan L., author
Massachusetts Lexington Books, 1984
Buku Teks
Lorna Guinness, Virginia Wiseman
McGraw-Hill, 2011
Buku Teks