Perez de Cuellar, Javier, author
United Nation, 1989
Buku Teks
Annan, Kofi A., author
United Nations Department of Public Information, 1997
Buku Teks
Boutros-Ghali, Boutros, 1922-, author
United Nations, 1995
Buku Teks
Boutros-Ghali, Boutros, 1922-, author
United Nations, 1996
Buku Teks
United Nations, Department of Public Information
United NAtions, 1989
Buku Teks