Bishop, Simon, author
Sweet & Maxwell, 2010
Buku Teks
Medhurst, David, author
Blackwell Scientific Publications, 1994
Buku Referensi
editors, Virginia Layng Millonig, Sally K. Miller
Health Leadership Associates, 1999
Buku Teks
Hildreth, Ronald B.
Practising Law Institute, 1993
Buku Teks
Douglas Davies
Guilford Press, 1999
Buku Teks