APA (7th ed.) Citation

United States. Central Intelligence Agency. (1983). Bulgaria. [Central Intelligence Agency].

Chicago Style (17th ed.) Citation

United States. Central Intelligence Agency. Bulgaria. [Washington, D.C.?]: [Central Intelligence Agency], 1983.

MLA (9th ed.) Citation

United States. Central Intelligence Agency. Bulgaria. [Central Intelligence Agency], 1983.

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