Belgrade falls to Austria-Hungary. (2013). The History Channel website. Retrieved 5:27, May 19, 2013, from http://www.history.com/this-day-in-history/belgrade-falls-to-austria-hungary.
Belgrade falls to Austria-Hungary. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/belgrade-falls-to-austria-hungary [Accessed 19 May 2013].
“Belgrade falls to Austria-Hungary.” 2013. The History Channel website. May 19 2013, 5:27 http://www.history.com/this-day-in-history/belgrade-falls-to-austria-hungary.
“Belgrade falls to Austria-Hungary,” The History Channel website, 2013, http://www.history.com/this-day-in-history/belgrade-falls-to-austria-hungary [accessed May 19, 2013].
“Belgrade falls to Austria-Hungary,” The History Channel website, http://www.history.com/this-day-in-history/belgrade-falls-to-austria-hungary (accessed May 19, 2013).
Belgrade falls to Austria-Hungary [Internet]. The History Channel website; 2013 [cited 2013 May 19] Available from: http://www.history.com/this-day-in-history/belgrade-falls-to-austria-hungary.
Belgrade falls to Austria-Hungary, http://www.history.com/this-day-in-history/belgrade-falls-to-austria-hungary (last visited May 19, 2013).
Belgrade falls to Austria-Hungary. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/belgrade-falls-to-austria-hungary. Accessed May 19, 2013.