Abraham Lincoln. (2013). The History Channel website. Retrieved 4:50, May 24, 2013, from http://www.history.com/topics/abraham-lincoln.
Abraham Lincoln. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/topics/abraham-lincoln [Accessed 24 May 2013].
“Abraham Lincoln.” 2013. The History Channel website. May 24 2013, 4:50 http://www.history.com/topics/abraham-lincoln.
“Abraham Lincoln,” The History Channel website, 2013, http://www.history.com/topics/abraham-lincoln [accessed May 24, 2013].
“Abraham Lincoln,” The History Channel website, http://www.history.com/topics/abraham-lincoln (accessed May 24, 2013).
Abraham Lincoln [Internet]. The History Channel website; 2013 [cited 2013 May 24] Available from: http://www.history.com/topics/abraham-lincoln.
Abraham Lincoln, http://www.history.com/topics/abraham-lincoln (last visited May 24, 2013).
Abraham Lincoln. The History Channel website. 2013. Available at: http://www.history.com/topics/abraham-lincoln. Accessed May 24, 2013.