R. A. W. Rhodes [and others]
Open University press, 2003
Buku Teks
Park, Patricia, author
Kluwer Law International, 2012
Buku Teks
O Neill, Kathleen, author
Cambridge University Press, 2005
Buku Teks
Collins, Lawrence, author
Butterworth, 1990
Buku Teks
London: Her Majesty's Stationary office, 1987,
Buku Referensi