APA (7th ed.) Citation

United States. Central Intelligence Agency. (2003). The World factbook. Brassey's.

Chicago Style (17th ed.) Citation

United States. Central Intelligence Agency. The World Factbook. Washington: Brassey's, 2003.

MLA (9th ed.) Citation

United States. Central Intelligence Agency. The World Factbook. Brassey's, 2003.

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