APA (7th ed.) Citation

UN. (1989). Classification By Broad Economic Categories (1. Edisyon.). UN.

Chicago Style (17th ed.) Citation

UN. Classification By Broad Economic Categories. 1. Edisyon. New York: UN, 1989.

MLA (9th ed.) Citation

UN. Classification By Broad Economic Categories. 1. Edisyon. UN, 1989.

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