Phillips, O. Hood
Sweet & Maxwell, 1987
Buku Teks
Thompson, Brian
Black Stone Press Limited, 1997
Buku Teks
Marston, John
Pitman, 1993
Buku Teks
Levy, Claudine, author
Clarendon Press, 1991
Buku Teks
Kahn-Freund, Otto, 1900-1979, author
Clarendon Press, 1991
Buku Teks