International Symposium on Population Structure and Development Tokyo & United Nations Department of Economic and Social Affairs. (1988). Economic and social implications of population aging: Proceedings of the International Symposium on Population Structure and Development, Tokyo, 10-12 September 1987. United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Symposium on Population Structure and Development Tokyo και United Nations Department of Economic and Social Affairs. Economic and Social Implications of Population Aging: Proceedings of the International Symposium on Population Structure and Development, Tokyo, 10-12 September 1987. New York: United Nations, 1988.
Παραπομπή σε μορφή MLA (8th εκδ.)International Symposium on Population Structure and Development Tokyo και United Nations Department of Economic and Social Affairs. Economic and Social Implications of Population Aging: Proceedings of the International Symposium on Population Structure and Development, Tokyo, 10-12 September 1987. United Nations, 1988.
