wikipedia.com
history.com
answers.yahoo.com
coldwar.org
Knightley, Phillip. "The Cambridge Spies." BBC History. BBC, 02 017 2011. Web. 5 Jan 2012.
United States. Cuban Missile Crisis Briefing Paper. Washington: , 1962. Print.
"Dobrynin's Cable." History Wiz. N.p., 10 027 1962. Web. 5 Jan 2012.
"Biography of Harry Truman." The White House. The United States Government. 26 May 2009. .
history.com
answers.yahoo.com
coldwar.org
Knightley, Phillip. "The Cambridge Spies." BBC History. BBC, 02 017 2011. Web. 5 Jan 2012.
United States. Cuban Missile Crisis Briefing Paper. Washington: , 1962. Print.
"Dobrynin's Cable." History Wiz. N.p., 10 027 1962. Web. 5 Jan 2012.
"Biography of Harry Truman." The White House. The United States Government. 26 May 2009. .