Gas pipe explodes in South Korea. (2013). The History Channel website. Retrieved 5:46, May 21, 2013, from http://www.history.com/this-day-in-history/gas-pipe-explodes-in-south-korea.
Gas pipe explodes in South Korea. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/gas-pipe-explodes-in-south-korea [Accessed 21 May 2013].
“Gas pipe explodes in South Korea.” 2013. The History Channel website. May 21 2013, 5:46 http://www.history.com/this-day-in-history/gas-pipe-explodes-in-south-korea.
“Gas pipe explodes in South Korea,” The History Channel website, 2013, http://www.history.com/this-day-in-history/gas-pipe-explodes-in-south-korea [accessed May 21, 2013].
“Gas pipe explodes in South Korea,” The History Channel website, http://www.history.com/this-day-in-history/gas-pipe-explodes-in-south-korea (accessed May 21, 2013).
Gas pipe explodes in South Korea [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/this-day-in-history/gas-pipe-explodes-in-south-korea.
Gas pipe explodes in South Korea, http://www.history.com/this-day-in-history/gas-pipe-explodes-in-south-korea (last visited May 21, 2013).
Gas pipe explodes in South Korea. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/gas-pipe-explodes-in-south-korea. Accessed May 21, 2013.