Grand Teton National Park is established. (2013). The History Channel website. Retrieved 6:23, June 19, 2013, from http://www.history.com/this-day-in-history/grand-teton-national-park-is-established.
Grand Teton National Park is established. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/grand-teton-national-park-is-established [Accessed 19 Jun 2013].
“Grand Teton National Park is established.” 2013. The History Channel website. Jun 19 2013, 6:23 http://www.history.com/this-day-in-history/grand-teton-national-park-is-established.
“Grand Teton National Park is established,” The History Channel website, 2013, http://www.history.com/this-day-in-history/grand-teton-national-park-is-established [accessed Jun 19, 2013].
“Grand Teton National Park is established,” The History Channel website, http://www.history.com/this-day-in-history/grand-teton-national-park-is-established (accessed Jun 19, 2013).
Grand Teton National Park is established [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/this-day-in-history/grand-teton-national-park-is-established.
Grand Teton National Park is established, http://www.history.com/this-day-in-history/grand-teton-national-park-is-established (last visited Jun 19, 2013).
Grand Teton National Park is established. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/grand-teton-national-park-is-established. Accessed Jun 19, 2013.