Deadly earthquake hits California. (2013). The History Channel website. Retrieved 4:00, May 22, 2013, from http://www.history.com/this-day-in-history/deadly-earthquake-hits-california.
Deadly earthquake hits California. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/deadly-earthquake-hits-california [Accessed 22 May 2013].
“Deadly earthquake hits California.” 2013. The History Channel website. May 22 2013, 4:00 http://www.history.com/this-day-in-history/deadly-earthquake-hits-california.
“Deadly earthquake hits California,” The History Channel website, 2013, http://www.history.com/this-day-in-history/deadly-earthquake-hits-california [accessed May 22, 2013].
“Deadly earthquake hits California,” The History Channel website, http://www.history.com/this-day-in-history/deadly-earthquake-hits-california (accessed May 22, 2013).
Deadly earthquake hits California [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/deadly-earthquake-hits-california.
Deadly earthquake hits California, http://www.history.com/this-day-in-history/deadly-earthquake-hits-california (last visited May 22, 2013).
Deadly earthquake hits California. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/deadly-earthquake-hits-california. Accessed May 22, 2013.