APA (7th ed.) Citation

UN. (1991). World Populations Prospects 1990 (1. Edisyon.). UN.

Chicago Style (17th ed.) Citation

UN. World Populations Prospects 1990. 1. Edisyon. New York: UN, 1991.

MLA (9th ed.) Citation

UN. World Populations Prospects 1990. 1. Edisyon. UN, 1991.

Warning: These citations may not always be 100% accurate.