Ratner, David L., author
West Publishing, 1996
Buku Teks
Jarrow, Robert, author
South-Western College, 2000
Buku Teks
Hudson, Alastair, author
Sweet and Maxwell, 2008
Buku Teks
Thomas, R.L.
Kluwer law and taxation Publisher, 1986
Buku Teks
Ratner, David L., author
West Publishing, 1992
Buku Teks