United Nations, 1999
Buku Teks
Pike, Fredrick B.
University of Notre Dame Press, 1963
Buku Teks
Lowenstein, Steven
International Legal Center, 1970
Buku Teks
Timerman, Jacobo
Vintage Books, 1987
Buku Teks
Nowak, Norman D., author
Praeger, 1970
Buku Teks