Antarctica made a military-free continent. (2013). The History Channel website. Retrieved 2:05, June 18, 2013, from http://www.history.com/this-day-in-history/antarctica-made-a-military-free-continent.
Antarctica made a military-free continent. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/antarctica-made-a-military-free-continent [Accessed 18 Jun 2013].
“Antarctica made a military-free continent.” 2013. The History Channel website. Jun 18 2013, 2:05 http://www.history.com/this-day-in-history/antarctica-made-a-military-free-continent.
“Antarctica made a military-free continent,” The History Channel website, 2013, http://www.history.com/this-day-in-history/antarctica-made-a-military-free-continent [accessed Jun 18, 2013].
“Antarctica made a military-free continent,” The History Channel website, http://www.history.com/this-day-in-history/antarctica-made-a-military-free-continent (accessed Jun 18, 2013).
Antarctica made a military-free continent [Internet]. The History Channel website; 2013 [cited 2013 Jun 18] Available from: http://www.history.com/this-day-in-history/antarctica-made-a-military-free-continent.
Antarctica made a military-free continent, http://www.history.com/this-day-in-history/antarctica-made-a-military-free-continent (last visited Jun 18, 2013).
Antarctica made a military-free continent. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/antarctica-made-a-military-free-continent. Accessed Jun 18, 2013.