Hurst, James Willard, author
Little, Brown, 1950
Buku Teks
Wright, Benjamin F., author
Phoenik Books, 1967
Buku Teks
Garvey, George E., author
Greenwood Press, 1990
Buku Teks
Cardozo, Benjamin N., author
Yale University Press, 1954
Buku Teks
Friedman, Lawrence M., 1930-, author
W.W. Norton, 1984
Buku Teks