edited by Leslie Rutherford
Sweet & Maxwell, 1993
Buku Referensi
Youngs, Raymond, author
Cavendish, 1994
Buku Teks
Foster, Nigel G., author
Blakcstone Press, 1993
Buku Teks
Clark, Robert C., author
Little, Brown, 1986
Buku Teks
Rachagan, Shanthy, author
LexisNexis, 2010
Buku Teks