Tsunami pounds Japanese islands. (2013). The History Channel website. Retrieved 11:35, May 20, 2013, from http://www.history.com/this-day-in-history/tsunami-pounds-japanese-islands.
Tsunami pounds Japanese islands. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/tsunami-pounds-japanese-islands [Accessed 20 May 2013].
“Tsunami pounds Japanese islands.” 2013. The History Channel website. May 20 2013, 11:35 http://www.history.com/this-day-in-history/tsunami-pounds-japanese-islands.
“Tsunami pounds Japanese islands,” The History Channel website, 2013, http://www.history.com/this-day-in-history/tsunami-pounds-japanese-islands [accessed May 20, 2013].
“Tsunami pounds Japanese islands,” The History Channel website, http://www.history.com/this-day-in-history/tsunami-pounds-japanese-islands (accessed May 20, 2013).
Tsunami pounds Japanese islands [Internet]. The History Channel website; 2013 [cited 2013 May 20] Available from: http://www.history.com/this-day-in-history/tsunami-pounds-japanese-islands.
Tsunami pounds Japanese islands, http://www.history.com/this-day-in-history/tsunami-pounds-japanese-islands (last visited May 20, 2013).
Tsunami pounds Japanese islands. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/tsunami-pounds-japanese-islands. Accessed May 20, 2013.