Moynihan, Cornelius J., author
West Publishing, 1962
Buku Teks
Keeton, George W., 1902-1989, author
Sir Isaac Pitman and Sons, 1950
Buku Teks
Bernhardt, Roger, author
West Publishing, 1993
Buku Teks
Haar, Charles M., author
Little, Brown, 1977
Buku Teks
Cunningham, Roger A., author
West Pub., 1993
Buku Teks