APA
"United Nations I. E. a. S. A. (. o., "United Nations I. E. a. S. A. (. o., . (1990). Population and vital statistics report. New: York UN.
Chicago
"United Nations International Economic and Social Affairs (Deptt of-)", "United Nations International Economic and Social Affairs (Deptt of-)", . 1990. Population and vital statistics report. New: York UN.
Harvard
"United Nations I. E. a. S. A. (. o., "United Nations I. E. a. S. A. (. o., . (1990). Population and vital statistics report. New: York UN.
MLA
"United Nations International Economic and Social Affairs (Deptt of-)", "United Nations International Economic and Social Affairs (Deptt of-)", . Population and vital statistics report. New: York UN. 1990.
