U.S. secretary of war resigns. (2013). The History Channel website. Retrieved 10:53, May 26, 2013, from http://www.history.com/this-day-in-history/us-secretary-of-war-resigns.
U.S. secretary of war resigns. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/us-secretary-of-war-resigns [Accessed 26 May 2013].
“U.S. secretary of war resigns.” 2013. The History Channel website. May 26 2013, 10:53 http://www.history.com/this-day-in-history/us-secretary-of-war-resigns.
“U.S. secretary of war resigns,” The History Channel website, 2013, http://www.history.com/this-day-in-history/us-secretary-of-war-resigns [accessed May 26, 2013].
“U.S. secretary of war resigns,” The History Channel website, http://www.history.com/this-day-in-history/us-secretary-of-war-resigns (accessed May 26, 2013).
U.S. secretary of war resigns [Internet]. The History Channel website; 2013 [cited 2013 May 26] Available from: http://www.history.com/this-day-in-history/us-secretary-of-war-resigns.
U.S. secretary of war resigns, http://www.history.com/this-day-in-history/us-secretary-of-war-resigns (last visited May 26, 2013).
U.S. secretary of war resigns. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/us-secretary-of-war-resigns. Accessed May 26, 2013.