A serial killer is executed. (2013). The History Channel website. Retrieved 11:19, May 18, 2013, from http://www.history.com/this-day-in-history/a-serial-killer-is-executed.
A serial killer is executed. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/a-serial-killer-is-executed [Accessed 18 May 2013].
“A serial killer is executed.” 2013. The History Channel website. May 18 2013, 11:19 http://www.history.com/this-day-in-history/a-serial-killer-is-executed.
“A serial killer is executed,” The History Channel website, 2013, http://www.history.com/this-day-in-history/a-serial-killer-is-executed [accessed May 18, 2013].
“A serial killer is executed,” The History Channel website, http://www.history.com/this-day-in-history/a-serial-killer-is-executed (accessed May 18, 2013).
A serial killer is executed [Internet]. The History Channel website; 2013 [cited 2013 May 18] Available from: http://www.history.com/this-day-in-history/a-serial-killer-is-executed.
A serial killer is executed, http://www.history.com/this-day-in-history/a-serial-killer-is-executed (last visited May 18, 2013).
A serial killer is executed. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/a-serial-killer-is-executed. Accessed May 18, 2013.