Gusher signals start of U.S. oil industry. (2013). The History Channel website. Retrieved 2:19, May 19, 2013, from http://www.history.com/this-day-in-history/gusher-signals-start-of-us-oil-industry.
Gusher signals start of U.S. oil industry. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/gusher-signals-start-of-us-oil-industry [Accessed 19 May 2013].
“Gusher signals start of U.S. oil industry.” 2013. The History Channel website. May 19 2013, 2:19 http://www.history.com/this-day-in-history/gusher-signals-start-of-us-oil-industry.
“Gusher signals start of U.S. oil industry,” The History Channel website, 2013, http://www.history.com/this-day-in-history/gusher-signals-start-of-us-oil-industry [accessed May 19, 2013].
“Gusher signals start of U.S. oil industry,” The History Channel website, http://www.history.com/this-day-in-history/gusher-signals-start-of-us-oil-industry (accessed May 19, 2013).
Gusher signals start of U.S. oil industry [Internet]. The History Channel website; 2013 [cited 2013 May 19] Available from: http://www.history.com/this-day-in-history/gusher-signals-start-of-us-oil-industry.
Gusher signals start of U.S. oil industry, http://www.history.com/this-day-in-history/gusher-signals-start-of-us-oil-industry (last visited May 19, 2013).
Gusher signals start of U.S. oil industry. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/gusher-signals-start-of-us-oil-industry. Accessed May 19, 2013.