Jefferson presented with a. (2013). The History Channel website. Retrieved 4:21, May 19, 2013, from http://www.history.com/.
Jefferson presented with a. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/ [Accessed 19 May 2013].
“Jefferson presented with a.” 2013. The History Channel website. May 19 2013, 4:21 http://www.history.com/.
“Jefferson presented with a,” The History Channel website, 2013, http://www.history.com/ [accessed May 19, 2013].
“Jefferson presented with a,” The History Channel website, http://www.history.com/ (accessed May 19, 2013).
Jefferson presented with a [Internet]. The History Channel website; 2013 [cited 2013 May 19] Available from: http://www.history.com/.
Jefferson presented with a, http://www.history.com/ (last visited May 19, 2013).
Jefferson presented with a. The History Channel website. 2013. Available at: http://www.history.com/. Accessed May 19, 2013.