Wright, Charles Alan
West Publishing, [1983, ]
Buku Referensi
Dodd, Walter Fairleigh, 1880-1960
West Publishing, 1949
Buku Teks
McCormick, Charles T. (Charles Tilford), 1889-1963
Foundation Press, 1976
Buku Teks
Klein, Mitchell S.G.
Prentice-Hall, 1984
Buku Teks
Hanbury, Harold Grenville
Oxford University Press, 1960
Buku Teks