Não informado. (1976). Important for the Future. United Nations, Institute for Training and Research.
Style de citation Chicago (17e éd.)Não informado. Important for the Future. New York: United Nations, Institute for Training and Research, 1976.
Style de citation MLA (8e éd.)Não informado. Important for the Future. United Nations, Institute for Training and Research, 1976.
Attention : ces citations peuvent ne pas être correctes à 100%.