Former Lincoln cabinet member Caleb Smith dies. (2013). The History Channel website. Retrieved 5:57, May 19, 2013, from http://www.history.com/this-day-in-history/caleb-blood-smith-dies.
Former Lincoln cabinet member Caleb Smith dies. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/caleb-blood-smith-dies [Accessed 19 May 2013].
“Former Lincoln cabinet member Caleb Smith dies.” 2013. The History Channel website. May 19 2013, 5:57 http://www.history.com/this-day-in-history/caleb-blood-smith-dies.
“Former Lincoln cabinet member Caleb Smith dies,” The History Channel website, 2013, http://www.history.com/this-day-in-history/caleb-blood-smith-dies [accessed May 19, 2013].
“Former Lincoln cabinet member Caleb Smith dies,” The History Channel website, http://www.history.com/this-day-in-history/caleb-blood-smith-dies (accessed May 19, 2013).
Former Lincoln cabinet member Caleb Smith dies [Internet]. The History Channel website; 2013 [cited 2013 May 19] Available from: http://www.history.com/this-day-in-history/caleb-blood-smith-dies.
Former Lincoln cabinet member Caleb Smith dies, http://www.history.com/this-day-in-history/caleb-blood-smith-dies (last visited May 19, 2013).
Former Lincoln cabinet member Caleb Smith dies. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/caleb-blood-smith-dies. Accessed May 19, 2013.