Não informado. (1976). Important for the Future. United Nations, Institute for Training and Research.
Chicago-Zitierstil (17. Ausg.)Não informado. Important for the Future. New York: United Nations, Institute for Training and Research, 1976.
MLA-Zitierstil (8. Ausg.)Não informado. Important for the Future. United Nations, Institute for Training and Research, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.