Thompson, Mark P., author
Oxford University Press, 2001
Buku Teks
Greenspan, Morris, author
University of California Press, 1959
Buku Teks
Glicksman, Robert L., author
West Publishing Co., 1995
Buku Teks
Thompson, Mark P., author
Sweet & Maxwell, 1995
Buku Teks
Curzon, L. B., author
Pitman, 1993
Buku Teks