APA (7th ed.) Citation

(1961). CIA, National Intelligence Estimate, NIE 11-61, Probable Intelligence Warning of Soviet Attack on the US, April 6, 1961, Top Secret.

Chicago Style (17th ed.) Citation

CIA, National Intelligence Estimate, NIE 11-61, Probable Intelligence Warning of Soviet Attack on the US, April 6, 1961, Top Secret. 1961.

MLA (8th ed.) Citation

CIA, National Intelligence Estimate, NIE 11-61, Probable Intelligence Warning of Soviet Attack on the US, April 6, 1961, Top Secret. 1961.

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