APA

International Symposium on Population Structure and Development (1987 : Tokyo), United Nations. Dept. of International 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. New York: United Nations.

Chicago

International Symposium on Population Structure and Development (1987 : Tokyo), United Nations. Dept. of International 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. New York: United Nations.

Harvard

International Symposium on Population Structure and Development (1987 : Tokyo), United Nations. Dept. of International 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. New York: United Nations.

MLA

International Symposium on Population Structure and Development (1987 : Tokyo), United Nations. Dept. of International 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.