Lincoln avoids assassination attempt. (2013). The History Channel website. Retrieved 11:53, May 21, 2013, from http://www.history.com/this-day-in-history/lincoln-avoids-assassination-attempt.
Lincoln avoids assassination attempt. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/lincoln-avoids-assassination-attempt [Accessed 21 May 2013].
“Lincoln avoids assassination attempt.” 2013. The History Channel website. May 21 2013, 11:53 http://www.history.com/this-day-in-history/lincoln-avoids-assassination-attempt.
“Lincoln avoids assassination attempt,” The History Channel website, 2013, http://www.history.com/this-day-in-history/lincoln-avoids-assassination-attempt [accessed May 21, 2013].
“Lincoln avoids assassination attempt,” The History Channel website, http://www.history.com/this-day-in-history/lincoln-avoids-assassination-attempt (accessed May 21, 2013).
Lincoln avoids assassination attempt [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/this-day-in-history/lincoln-avoids-assassination-attempt.
Lincoln avoids assassination attempt, http://www.history.com/this-day-in-history/lincoln-avoids-assassination-attempt (last visited May 21, 2013).
Lincoln avoids assassination attempt. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/lincoln-avoids-assassination-attempt. Accessed May 21, 2013.