Cardozo, Benjamin N., author
Yale University Press, 1954
Buku Teks
Hurst, James Willard, author
Little, Brown, 1950
Buku Teks
Wright, Benjamin F., author
Phoenik Books, 1967
Buku Teks
Dam, Kenneth W., author
The Brooking Institution, 2006
Buku Teks
Garvey, George E., author
Greenwood Press, 1990
Buku Teks