Tsunami. (2013). The History Channel website. Retrieved 12:41, June 19, 2013, from http://www.history.com/shows/how-the-earth-was-made/episodes/season-1.
Tsunami. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/how-the-earth-was-made/episodes/season-1 [Accessed 19 Jun 2013].
“Tsunami.” 2013. The History Channel website. Jun 19 2013, 12:41 http://www.history.com/shows/how-the-earth-was-made/episodes/season-1.
“Tsunami,” The History Channel website, 2013, http://www.history.com/shows/how-the-earth-was-made/episodes/season-1 [accessed Jun 19, 2013].
“Tsunami,” The History Channel website, http://www.history.com/shows/how-the-earth-was-made/episodes/season-1 (accessed Jun 19, 2013).
Tsunami [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/shows/how-the-earth-was-made/episodes/season-1.
Tsunami, http://www.history.com/shows/how-the-earth-was-made/episodes/season-1 (last visited Jun 19, 2013).
Tsunami. The History Channel website. 2013. Available at: http://www.history.com/shows/how-the-earth-was-made/episodes/season-1. Accessed Jun 19, 2013.