Abraham Lincoln. (2013). The History Channel website. Retrieved 12:44, June 19, 2013, from http://www.history.com/shows/10-things-you-dont-know-about/episodes/season-1.
Abraham Lincoln. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/10-things-you-dont-know-about/episodes/season-1 [Accessed 19 Jun 2013].
“Abraham Lincoln.” 2013. The History Channel website. Jun 19 2013, 12:44 http://www.history.com/shows/10-things-you-dont-know-about/episodes/season-1.
“Abraham Lincoln,” The History Channel website, 2013, http://www.history.com/shows/10-things-you-dont-know-about/episodes/season-1 [accessed Jun 19, 2013].
“Abraham Lincoln,” The History Channel website, http://www.history.com/shows/10-things-you-dont-know-about/episodes/season-1 (accessed Jun 19, 2013).
Abraham Lincoln [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/shows/10-things-you-dont-know-about/episodes/season-1.
Abraham Lincoln, http://www.history.com/shows/10-things-you-dont-know-about/episodes/season-1 (last visited Jun 19, 2013).
Abraham Lincoln. The History Channel website. 2013. Available at: http://www.history.com/shows/10-things-you-dont-know-about/episodes/season-1. Accessed Jun 19, 2013.