edited by Jon Pierre
Edward Elgar, 1994
Buku Teks
edited by Martin Painter and B. Guy Peters
Palgrave Macmillan, 2010
Buku Teks
Peters, B. Guy
Routledge, 2009
Buku Teks
edited by Maurice E. O'Donnell
Houghton Mifflin, 1966
Buku Teks
Pollit, Christopher
Oxford University press, 2000
Buku Teks