Charles XII, or Carl of Sweden was the King of the Swedish Empire from 1697 to 1718. He assumed the crown at the age of fifteen, at the death of his father.
Charles XII. (2013). The Biography Channel website. Retrieved 11:00, May 25, 2013, from http://www.biography.com/people/charles-xii-9244908.
Charles XII. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/charles-xii-9244908 [Accessed 25 May 2013].
"Charles XII." 2013. The Biography Channel website. May 25 2013, 11:00 http://www.biography.com/people/charles-xii-9244908.
"Charles XII," The Biography Channel website, 2013, http://www.biography.com/people/charles-xii-9244908 [accessed May 25, 2013].
"Charles XII," The Biography Channel website, http://www.biography.com/people/charles-xii-9244908 (accessed May 25, 2013).
Charles XII [Internet]. The Biography Channel website; 2013 [cited 2013 May 25] Available from: http://www.biography.com/people/charles-xii-9244908.
Charles XII, http://www.biography.com/people/charles-xii-9244908 (last visited May 25, 2013).
Charles XII. The Biography Channel website. 2013. Available at: http://www.biography.com/people/charles-xii-9244908. Accessed May 25, 2013.