The World's Columbian Exposition closes in Chicago. (2013). The History Channel website. Retrieved 5:51, June 20, 2013, from http://www.history.com/this-day-in-history/the-worlds-columbian-exposition-closes-in-chicago.
The World's Columbian Exposition closes in Chicago. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/the-worlds-columbian-exposition-closes-in-chicago [Accessed 20 Jun 2013].
“The World's Columbian Exposition closes in Chicago.” 2013. The History Channel website. Jun 20 2013, 5:51 http://www.history.com/this-day-in-history/the-worlds-columbian-exposition-closes-in-chicago.
“The World's Columbian Exposition closes in Chicago,” The History Channel website, 2013, http://www.history.com/this-day-in-history/the-worlds-columbian-exposition-closes-in-chicago [accessed Jun 20, 2013].
“The World's Columbian Exposition closes in Chicago,” The History Channel website, http://www.history.com/this-day-in-history/the-worlds-columbian-exposition-closes-in-chicago (accessed Jun 20, 2013).
The World's Columbian Exposition closes in Chicago [Internet]. The History Channel website; 2013 [cited 2013 Jun 20] Available from: http://www.history.com/this-day-in-history/the-worlds-columbian-exposition-closes-in-chicago.
The World's Columbian Exposition closes in Chicago, http://www.history.com/this-day-in-history/the-worlds-columbian-exposition-closes-in-chicago (last visited Jun 20, 2013).
The World's Columbian Exposition closes in Chicago. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/the-worlds-columbian-exposition-closes-in-chicago. Accessed Jun 20, 2013.