Officer Wyatt Earp fatally wounds cowboy. (2013). The History Channel website. Retrieved 11:14, May 22, 2013, from http://www.history.com/this-day-in-history/officer-wyatt-earp-fatally-wounds-cowboy.
Officer Wyatt Earp fatally wounds cowboy. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/officer-wyatt-earp-fatally-wounds-cowboy [Accessed 22 May 2013].
“Officer Wyatt Earp fatally wounds cowboy.” 2013. The History Channel website. May 22 2013, 11:14 http://www.history.com/this-day-in-history/officer-wyatt-earp-fatally-wounds-cowboy.
“Officer Wyatt Earp fatally wounds cowboy,” The History Channel website, 2013, http://www.history.com/this-day-in-history/officer-wyatt-earp-fatally-wounds-cowboy [accessed May 22, 2013].
“Officer Wyatt Earp fatally wounds cowboy,” The History Channel website, http://www.history.com/this-day-in-history/officer-wyatt-earp-fatally-wounds-cowboy (accessed May 22, 2013).
Officer Wyatt Earp fatally wounds cowboy [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/officer-wyatt-earp-fatally-wounds-cowboy.
Officer Wyatt Earp fatally wounds cowboy, http://www.history.com/this-day-in-history/officer-wyatt-earp-fatally-wounds-cowboy (last visited May 22, 2013).
Officer Wyatt Earp fatally wounds cowboy. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/officer-wyatt-earp-fatally-wounds-cowboy. Accessed May 22, 2013.