Illinois becomes the 21st state. (2013). The History Channel website. Retrieved 4:55, May 20, 2013, from http://www.history.com/this-day-in-history/illinois-becomes-the-21st-state.
Illinois becomes the 21st state. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/illinois-becomes-the-21st-state [Accessed 20 May 2013].
“Illinois becomes the 21st state.” 2013. The History Channel website. May 20 2013, 4:55 http://www.history.com/this-day-in-history/illinois-becomes-the-21st-state.
“Illinois becomes the 21st state,” The History Channel website, 2013, http://www.history.com/this-day-in-history/illinois-becomes-the-21st-state [accessed May 20, 2013].
“Illinois becomes the 21st state,” The History Channel website, http://www.history.com/this-day-in-history/illinois-becomes-the-21st-state (accessed May 20, 2013).
Illinois becomes the 21st state [Internet]. The History Channel website; 2013 [cited 2013 May 20] Available from: http://www.history.com/this-day-in-history/illinois-becomes-the-21st-state.
Illinois becomes the 21st state, http://www.history.com/this-day-in-history/illinois-becomes-the-21st-state (last visited May 20, 2013).
Illinois becomes the 21st state. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/illinois-becomes-the-21st-state. Accessed May 20, 2013.