Paish, F.W. (Frank Walter)
Macmillan & Co. , 1950
Buku Teks
Park, Patricia
Kluwer Law International, 2012
Buku Teks
Collins, Lawrence
Butterworth, 1990
Buku Teks
London: Her Majesty's Stationary office, 1987,
Buku Referensi
edited by John Mohan
Oxford University Press, 1999
Buku Teks