Earthquake rocks the American wilderness. (2013). The History Channel website. Retrieved 12:14, May 22, 2013, from http://www.history.com/this-day-in-history/earthquake-rocks-the-american-wilderness.
Earthquake rocks the American wilderness. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/earthquake-rocks-the-american-wilderness [Accessed 22 May 2013].
“Earthquake rocks the American wilderness.” 2013. The History Channel website. May 22 2013, 12:14 http://www.history.com/this-day-in-history/earthquake-rocks-the-american-wilderness.
“Earthquake rocks the American wilderness,” The History Channel website, 2013, http://www.history.com/this-day-in-history/earthquake-rocks-the-american-wilderness [accessed May 22, 2013].
“Earthquake rocks the American wilderness,” The History Channel website, http://www.history.com/this-day-in-history/earthquake-rocks-the-american-wilderness (accessed May 22, 2013).
Earthquake rocks the American wilderness [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/earthquake-rocks-the-american-wilderness.
Earthquake rocks the American wilderness, http://www.history.com/this-day-in-history/earthquake-rocks-the-american-wilderness (last visited May 22, 2013).
Earthquake rocks the American wilderness. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/earthquake-rocks-the-american-wilderness. Accessed May 22, 2013.