Bryan A. Garner, editor in chief
West Publishing, 1999
Buku Referensi
Lusk, Harold F., 1893-, author
R. D. Irwin, 1966.
Buku Teks
Walker, Marianne McGettigan
American law Institute Publishers, 1995
Buku Teks
Hurst, James Willard, author
Little, Brown, 1950
Buku Teks
Gilmore, Grant
Yale University Press, 1977
Buku Teks