U.S. officially ends participation in a Cold War conflict. (2013). The History Channel website. Retrieved 1:27, May 24, 2013, from http://www.history.com/this-day-in-history/us-officially-ends-participation-in-a-cold-war-conflict.
U.S. officially ends participation in a Cold War conflict. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/us-officially-ends-participation-in-a-cold-war-conflict [Accessed 24 May 2013].
“U.S. officially ends participation in a Cold War conflict.” 2013. The History Channel website. May 24 2013, 1:27 http://www.history.com/this-day-in-history/us-officially-ends-participation-in-a-cold-war-conflict.
“U.S. officially ends participation in a Cold War conflict,” The History Channel website, 2013, http://www.history.com/this-day-in-history/us-officially-ends-participation-in-a-cold-war-conflict [accessed May 24, 2013].
“U.S. officially ends participation in a Cold War conflict,” The History Channel website, http://www.history.com/this-day-in-history/us-officially-ends-participation-in-a-cold-war-conflict (accessed May 24, 2013).
U.S. officially ends participation in a Cold War conflict [Internet]. The History Channel website; 2013 [cited 2013 May 24] Available from: http://www.history.com/this-day-in-history/us-officially-ends-participation-in-a-cold-war-conflict.
U.S. officially ends participation in a Cold War conflict, http://www.history.com/this-day-in-history/us-officially-ends-participation-in-a-cold-war-conflict (last visited May 24, 2013).
U.S. officially ends participation in a Cold War conflict. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/us-officially-ends-participation-in-a-cold-war-conflict. Accessed May 24, 2013.