Major Earthquake and Tsunami Hit Japan. (2013). The History Channel website. Retrieved 11:45, May 21, 2013, from http://www.history.com/speeches/major-earthquake-and-tsunami-hit-japan.
Major Earthquake and Tsunami Hit Japan. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/speeches/major-earthquake-and-tsunami-hit-japan [Accessed 21 May 2013].
“Major Earthquake and Tsunami Hit Japan.” 2013. The History Channel website. May 21 2013, 11:45 http://www.history.com/speeches/major-earthquake-and-tsunami-hit-japan.
“Major Earthquake and Tsunami Hit Japan,” The History Channel website, 2013, http://www.history.com/speeches/major-earthquake-and-tsunami-hit-japan [accessed May 21, 2013].
“Major Earthquake and Tsunami Hit Japan,” The History Channel website, http://www.history.com/speeches/major-earthquake-and-tsunami-hit-japan (accessed May 21, 2013).
Major Earthquake and Tsunami Hit Japan [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/speeches/major-earthquake-and-tsunami-hit-japan.
Major Earthquake and Tsunami Hit Japan, http://www.history.com/speeches/major-earthquake-and-tsunami-hit-japan (last visited May 21, 2013).
Major Earthquake and Tsunami Hit Japan. The History Channel website. 2013. Available at: http://www.history.com/speeches/major-earthquake-and-tsunami-hit-japan. Accessed May 21, 2013.