Superpowers agree to reduce nuclear arsenals. (2013). The History Channel website. Retrieved 3:41, May 21, 2013, from http://www.history.com/this-day-in-history/superpowers-agree-to-reduce-nuclear-arsenals.
Superpowers agree to reduce nuclear arsenals. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/superpowers-agree-to-reduce-nuclear-arsenals [Accessed 21 May 2013].
“Superpowers agree to reduce nuclear arsenals.” 2013. The History Channel website. May 21 2013, 3:41 http://www.history.com/this-day-in-history/superpowers-agree-to-reduce-nuclear-arsenals.
“Superpowers agree to reduce nuclear arsenals,” The History Channel website, 2013, http://www.history.com/this-day-in-history/superpowers-agree-to-reduce-nuclear-arsenals [accessed May 21, 2013].
“Superpowers agree to reduce nuclear arsenals,” The History Channel website, http://www.history.com/this-day-in-history/superpowers-agree-to-reduce-nuclear-arsenals (accessed May 21, 2013).
Superpowers agree to reduce nuclear arsenals [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/this-day-in-history/superpowers-agree-to-reduce-nuclear-arsenals.
Superpowers agree to reduce nuclear arsenals, http://www.history.com/this-day-in-history/superpowers-agree-to-reduce-nuclear-arsenals (last visited May 21, 2013).
Superpowers agree to reduce nuclear arsenals. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/superpowers-agree-to-reduce-nuclear-arsenals. Accessed May 21, 2013.