APA引文

United Nations. (1975). Towards a system of social and demographic statistics. United Nations.

Chicago Edition Citation

United Nations. Towards a System of Social and Demographic Statistics. New York: United Nations, 1975.

MLA引文

United Nations. Towards a System of Social and Demographic Statistics. United Nations, 1975.

警告：这些引文格式不一定是100％准确.