Mathew Brady photographs presidential candidate Abraham Lincoln. (2013). The History Channel website. Retrieved 10:05, June 18, 2013, from http://www.history.com/this-day-in-history/mathew-brady-photographs-presidential-candidate-abraham-lincoln.
Mathew Brady photographs presidential candidate Abraham Lincoln. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/mathew-brady-photographs-presidential-candidate-abraham-lincoln [Accessed 18 Jun 2013].
“Mathew Brady photographs presidential candidate Abraham Lincoln.” 2013. The History Channel website. Jun 18 2013, 10:05 http://www.history.com/this-day-in-history/mathew-brady-photographs-presidential-candidate-abraham-lincoln.
“Mathew Brady photographs presidential candidate Abraham Lincoln,” The History Channel website, 2013, http://www.history.com/this-day-in-history/mathew-brady-photographs-presidential-candidate-abraham-lincoln [accessed Jun 18, 2013].
“Mathew Brady photographs presidential candidate Abraham Lincoln,” The History Channel website, http://www.history.com/this-day-in-history/mathew-brady-photographs-presidential-candidate-abraham-lincoln (accessed Jun 18, 2013).
Mathew Brady photographs presidential candidate Abraham Lincoln [Internet]. The History Channel website; 2013 [cited 2013 Jun 18] Available from: http://www.history.com/this-day-in-history/mathew-brady-photographs-presidential-candidate-abraham-lincoln.
Mathew Brady photographs presidential candidate Abraham Lincoln, http://www.history.com/this-day-in-history/mathew-brady-photographs-presidential-candidate-abraham-lincoln (last visited Jun 18, 2013).
Mathew Brady photographs presidential candidate Abraham Lincoln. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/mathew-brady-photographs-presidential-candidate-abraham-lincoln. Accessed Jun 18, 2013.