The United Mine Workers Killings. (2013). The History Channel website. Retrieved 5:14, June 20, 2013, from http://www.history.com/this-day-in-history/the-united-mine-workers-killings.
The United Mine Workers Killings. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/the-united-mine-workers-killings [Accessed 20 Jun 2013].
“The United Mine Workers Killings.” 2013. The History Channel website. Jun 20 2013, 5:14 http://www.history.com/this-day-in-history/the-united-mine-workers-killings.
“The United Mine Workers Killings,” The History Channel website, 2013, http://www.history.com/this-day-in-history/the-united-mine-workers-killings [accessed Jun 20, 2013].
“The United Mine Workers Killings,” The History Channel website, http://www.history.com/this-day-in-history/the-united-mine-workers-killings (accessed Jun 20, 2013).
The United Mine Workers Killings [Internet]. The History Channel website; 2013 [cited 2013 Jun 20] Available from: http://www.history.com/this-day-in-history/the-united-mine-workers-killings.
The United Mine Workers Killings, http://www.history.com/this-day-in-history/the-united-mine-workers-killings (last visited Jun 20, 2013).
The United Mine Workers Killings. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/the-united-mine-workers-killings. Accessed Jun 20, 2013.