The United States and Soviet Union step back from brink of nuclear war. (2013). The History Channel website. Retrieved 6:11, June 19, 2013, from http://www.history.com/this-day-in-history/the-united-states-and-soviet-union-step-back-from-brink-of-nuclear-war.
The United States and Soviet Union step back from brink of nuclear war. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/the-united-states-and-soviet-union-step-back-from-brink-of-nuclear-war [Accessed 19 Jun 2013].
“The United States and Soviet Union step back from brink of nuclear war.” 2013. The History Channel website. Jun 19 2013, 6:11 http://www.history.com/this-day-in-history/the-united-states-and-soviet-union-step-back-from-brink-of-nuclear-war.
“The United States and Soviet Union step back from brink of nuclear war,” The History Channel website, 2013, http://www.history.com/this-day-in-history/the-united-states-and-soviet-union-step-back-from-brink-of-nuclear-war [accessed Jun 19, 2013].
“The United States and Soviet Union step back from brink of nuclear war,” The History Channel website, http://www.history.com/this-day-in-history/the-united-states-and-soviet-union-step-back-from-brink-of-nuclear-war (accessed Jun 19, 2013).
The United States and Soviet Union step back from brink of nuclear war [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/this-day-in-history/the-united-states-and-soviet-union-step-back-from-brink-of-nuclear-war.
The United States and Soviet Union step back from brink of nuclear war, http://www.history.com/this-day-in-history/the-united-states-and-soviet-union-step-back-from-brink-of-nuclear-war (last visited Jun 19, 2013).
The United States and Soviet Union step back from brink of nuclear war. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/the-united-states-and-soviet-union-step-back-from-brink-of-nuclear-war. Accessed Jun 19, 2013.