Lorch, Robert S., author
Wayne State University Press, 1969
Buku Teks
Fesler, James W. (James William), 1911-2005, author
Chatam House, 1991
Buku Teks
Landis, James M.
Jale University Press, 1966
Buku Teks
Wade, H. W. R.
Clarendon Press, 1971
Buku Teks
Schwartz, Bernard, author
Little, Brown & Co., 1991
Buku Teks