The Reign of Charlemagne. (2013). The History Channel website. Retrieved 7:04, June 20, 2013, from http://www.history.com/videos/the-reign-of-charlemagne.
The Reign of Charlemagne. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/videos/the-reign-of-charlemagne [Accessed 20 Jun 2013].
“The Reign of Charlemagne.” 2013. The History Channel website. Jun 20 2013, 7:04 http://www.history.com/videos/the-reign-of-charlemagne.
“The Reign of Charlemagne,” The History Channel website, 2013, http://www.history.com/videos/the-reign-of-charlemagne [accessed Jun 20, 2013].
“The Reign of Charlemagne,” The History Channel website, http://www.history.com/videos/the-reign-of-charlemagne (accessed Jun 20, 2013).
The Reign of Charlemagne [Internet]. The History Channel website; 2013 [cited 2013 Jun 20] Available from: http://www.history.com/videos/the-reign-of-charlemagne.
The Reign of Charlemagne, http://www.history.com/videos/the-reign-of-charlemagne (last visited Jun 20, 2013).
The Reign of Charlemagne. The History Channel website. 2013. Available at: http://www.history.com/videos/the-reign-of-charlemagne. Accessed Jun 20, 2013.