Twenty-one people are shot to death at McDonald's. (2013). The History Channel website. Retrieved 5:00, May 22, 2013, from http://www.history.com/this-day-in-history/twenty-one-people-are-shot-to-death-at-mcdonalds.
Twenty-one people are shot to death at McDonald's. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/twenty-one-people-are-shot-to-death-at-mcdonalds [Accessed 22 May 2013].
“Twenty-one people are shot to death at McDonald's.” 2013. The History Channel website. May 22 2013, 5:00 http://www.history.com/this-day-in-history/twenty-one-people-are-shot-to-death-at-mcdonalds.
“Twenty-one people are shot to death at McDonald's,” The History Channel website, 2013, http://www.history.com/this-day-in-history/twenty-one-people-are-shot-to-death-at-mcdonalds [accessed May 22, 2013].
“Twenty-one people are shot to death at McDonald's,” The History Channel website, http://www.history.com/this-day-in-history/twenty-one-people-are-shot-to-death-at-mcdonalds (accessed May 22, 2013).
Twenty-one people are shot to death at McDonald's [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/twenty-one-people-are-shot-to-death-at-mcdonalds.
Twenty-one people are shot to death at McDonald's, http://www.history.com/this-day-in-history/twenty-one-people-are-shot-to-death-at-mcdonalds (last visited May 22, 2013).
Twenty-one people are shot to death at McDonald's. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/twenty-one-people-are-shot-to-death-at-mcdonalds. Accessed May 22, 2013.