Blume, William Wirt
Prentice-Hall, 1955
Buku Teks
Louisell, David W., author
Foundation Press, 1979
Buku Teks
Hall, Livingston, author
West Publishing, 1965
Buku Teks
Hall, Livingston, author
West Publishing, 1966
Buku Teks
Kamisar, Yale, author
West Publishing, 1983
Buku Teks