APA (7th ed.) Citation

(1956). CIA, NSC Briefing, Late News From Hungary, October 26, 1956, [Top Secret Eider].

Chicago Style (17th ed.) Citation

CIA, NSC Briefing, Late News From Hungary, October 26, 1956, [Top Secret Eider]. 1956.

MLA (8th ed.) Citation

CIA, NSC Briefing, Late News From Hungary, October 26, 1956, [Top Secret Eider]. 1956.

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