Sir Walter Raleigh executed. (2013). The History Channel website. Retrieved 7:38, May 21, 2013, from http://www.history.com/this-day-in-history/sir-walter-raleigh-executed.
Sir Walter Raleigh executed. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/sir-walter-raleigh-executed [Accessed 21 May 2013].
“Sir Walter Raleigh executed.” 2013. The History Channel website. May 21 2013, 7:38 http://www.history.com/this-day-in-history/sir-walter-raleigh-executed.
“Sir Walter Raleigh executed,” The History Channel website, 2013, http://www.history.com/this-day-in-history/sir-walter-raleigh-executed [accessed May 21, 2013].
“Sir Walter Raleigh executed,” The History Channel website, http://www.history.com/this-day-in-history/sir-walter-raleigh-executed (accessed May 21, 2013).
Sir Walter Raleigh executed [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/this-day-in-history/sir-walter-raleigh-executed.
Sir Walter Raleigh executed, http://www.history.com/this-day-in-history/sir-walter-raleigh-executed (last visited May 21, 2013).
Sir Walter Raleigh executed. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/sir-walter-raleigh-executed. Accessed May 21, 2013.