Cross, Harold L.
Columbia University Press, 1953
Buku Teks
Ginn Custom, 1985
Buku Teks
Harcourt Brace Jovanovich Legal and Professional Publications, 1984
Buku Teks
Keeton, Robert E., author
West Publishing, 1988
Buku Teks
Kenny, Philip H.
Butterworth, 1994
Buku Teks