Theodore Roosevelt. (2013). The History Channel website. Retrieved 10:10, May 23, 2013, from http://www.history.com/topics/theodore-roosevelt.
Theodore Roosevelt. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/topics/theodore-roosevelt [Accessed 23 May 2013].
“Theodore Roosevelt.” 2013. The History Channel website. May 23 2013, 10:10 http://www.history.com/topics/theodore-roosevelt.
“Theodore Roosevelt,” The History Channel website, 2013, http://www.history.com/topics/theodore-roosevelt [accessed May 23, 2013].
“Theodore Roosevelt,” The History Channel website, http://www.history.com/topics/theodore-roosevelt (accessed May 23, 2013).
Theodore Roosevelt [Internet]. The History Channel website; 2013 [cited 2013 May 23] Available from: http://www.history.com/topics/theodore-roosevelt.
Theodore Roosevelt, http://www.history.com/topics/theodore-roosevelt (last visited May 23, 2013).
Theodore Roosevelt. The History Channel website. 2013. Available at: http://www.history.com/topics/theodore-roosevelt. Accessed May 23, 2013.