APA
United Nations E. a. S. A., United Nations E. a. S. A., . (1971). Human fertility and national development. New York: United Nations USA.
Chicago
United Nations Economic and Social Affairs, United Nations Economic and Social Affairs, . 1971. Human fertility and national development. New York: United Nations USA.
Harvard
United Nations E. a. S. A., United Nations E. a. S. A., . (1971). Human fertility and national development. New York: United Nations USA.
MLA
United Nations Economic and Social Affairs, United Nations Economic and Social Affairs, . Human fertility and national development. New York: United Nations USA. 1971.