Departemen of Public Information UN, 1989
Buku Teks
Departemen of Public Information UN, 2014
Buku Teks
United Nations, 1964
Buku Teks
United Nations Publications, 1975
Buku Teks
Coyle, David Cushman, 1887-1969, author
Columbia University Press, 1963
Buku Teks