Reagan is shot. (2013). The History Channel website. Retrieved 6:52, May 21, 2013, from http://www.history.com/this-day-in-history/reagan-is-shot.
Reagan is shot. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/reagan-is-shot [Accessed 21 May 2013].
“Reagan is shot.” 2013. The History Channel website. May 21 2013, 6:52 http://www.history.com/this-day-in-history/reagan-is-shot.
“Reagan is shot,” The History Channel website, 2013, http://www.history.com/this-day-in-history/reagan-is-shot [accessed May 21, 2013].
“Reagan is shot,” The History Channel website, http://www.history.com/this-day-in-history/reagan-is-shot (accessed May 21, 2013).
Reagan is shot [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/this-day-in-history/reagan-is-shot.
Reagan is shot, http://www.history.com/this-day-in-history/reagan-is-shot (last visited May 21, 2013).
Reagan is shot. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/reagan-is-shot. Accessed May 21, 2013.