Southern congressman attacks Northern senator. (2013). The History Channel website. Retrieved 3:49, May 25, 2013, from http://www.history.com/this-day-in-history/preston-brooks-attacks-charles-sumner.
Southern congressman attacks Northern senator. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/preston-brooks-attacks-charles-sumner [Accessed 25 May 2013].
“Southern congressman attacks Northern senator.” 2013. The History Channel website. May 25 2013, 3:49 http://www.history.com/this-day-in-history/preston-brooks-attacks-charles-sumner.
“Southern congressman attacks Northern senator,” The History Channel website, 2013, http://www.history.com/this-day-in-history/preston-brooks-attacks-charles-sumner [accessed May 25, 2013].
“Southern congressman attacks Northern senator,” The History Channel website, http://www.history.com/this-day-in-history/preston-brooks-attacks-charles-sumner (accessed May 25, 2013).
Southern congressman attacks Northern senator [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/preston-brooks-attacks-charles-sumner.
Southern congressman attacks Northern senator, http://www.history.com/this-day-in-history/preston-brooks-attacks-charles-sumner (last visited May 25, 2013).
Southern congressman attacks Northern senator. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/preston-brooks-attacks-charles-sumner. Accessed May 25, 2013.