Coolidge establishes. (2013). The History Channel website. Retrieved 7:41, June 19, 2013, from http://www.history.com/this-day-in-history/coolidge-establishes-grand-teton-national-park.
Coolidge establishes. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/coolidge-establishes-grand-teton-national-park [Accessed 19 Jun 2013].
“Coolidge establishes.” 2013. The History Channel website. Jun 19 2013, 7:41 http://www.history.com/this-day-in-history/coolidge-establishes-grand-teton-national-park.
“Coolidge establishes,” The History Channel website, 2013, http://www.history.com/this-day-in-history/coolidge-establishes-grand-teton-national-park [accessed Jun 19, 2013].
“Coolidge establishes,” The History Channel website, http://www.history.com/this-day-in-history/coolidge-establishes-grand-teton-national-park (accessed Jun 19, 2013).
Coolidge establishes [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/this-day-in-history/coolidge-establishes-grand-teton-national-park.
Coolidge establishes, http://www.history.com/this-day-in-history/coolidge-establishes-grand-teton-national-park (last visited Jun 19, 2013).
Coolidge establishes. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/coolidge-establishes-grand-teton-national-park. Accessed Jun 19, 2013.