Laski, Harold J., author
George Allen and Unwin, 1952
Buku Teks
Strassfeld, Michael, author
Harper and Row, 1985
Buku Referensi
Davies, Howard, author
Butterworth, 1991
Buku Teks
Luntz, Harold, author
Butterworth, 1985
Buku Teks
McKeough, Jill, author
Lawbook, 2007
Buku Teks