Illsley, Raymond
Nuffield provincial Hospitals Trust, 1980
Buku Teks
Darr, Kurt, author
The John Hopkins University Press , 1997
Buku Teks
Watt, Helen, author
Routledge , 2000
Buku Teks
Aaron, Henry J., author
Brookings Institution, 1991
Buku Teks
J. Guwandi, author
Balai Penerbit, 2010
Buku Teks