APA (7th ed.) Citation

United States. Central Intelligence Agency. (2008). The world factbook 2008. Potomac Books.

Chicago Style (17th ed.) Citation

United States. Central Intelligence Agency. The World Factbook 2008. Washington D.C: Potomac Books, 2008.

MLA (9th ed.) Citation

United States. Central Intelligence Agency. The World Factbook 2008. Potomac Books, 2008.

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