APA (7th ed.) Citation

United States. Central Intelligence Agency. (1989). Standard time zones of the world. [Central Intelligence Agency].

Chicago Style (17th ed.) Citation

United States. Central Intelligence Agency. Standard Time Zones of the World. [Washington, D.C.?]: [Central Intelligence Agency], 1989.

MLA (9th ed.) Citation

United States. Central Intelligence Agency. Standard Time Zones of the World. [Central Intelligence Agency], 1989.

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