Hackworth, Green Haywood, author
Government Printing Office, 1943
Buku Teks
Kuhn, Arthur K., author
Macmillan, 1953
Buku Teks
Schwebel, Stephen M.
Grotius Publications, 1994
Buku Teks
Patrick, Daniel
Harvard University Press, 1990
Buku Teks
Moore, John B.
Government Printing Office, 1906
Buku Teks