David Marquand; Ronald L. Nettler., editor
Blackwell Publisher, 2000
Buku Teks
Mary Bryden
Routledge, 2001
Buku Teks
O`Connor, David, author
Routledge, 2000
Buku Teks
Farrington, Karen, author
Chancellor Pres, 1998
Buku Referensi
editor, James F. Fox
Archipelago Press, 1999
Buku Referensi