Union of International Associations. (1991). Encyclopedia of world problems and human potential (3rd ed.). K.G. Saur.
Cita Chicago Style (17a ed.)Union of International Associations. Encyclopedia of World Problems and Human Potential. 3rd ed. New York: K.G. Saur, 1991.
Cita MLA (9a ed.)Union of International Associations. Encyclopedia of World Problems and Human Potential. 3rd ed. K.G. Saur, 1991.
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