German troops capture Fort Douaumont (Verdun). (2013). The History Channel website. Retrieved 9:08, May 25, 2013, from http://www.history.com/this-day-in-history/german-troops-capture-fort-douaumont-verdun.
German troops capture Fort Douaumont (Verdun). [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/german-troops-capture-fort-douaumont-verdun [Accessed 25 May 2013].
“German troops capture Fort Douaumont (Verdun).” 2013. The History Channel website. May 25 2013, 9:08 http://www.history.com/this-day-in-history/german-troops-capture-fort-douaumont-verdun.
“German troops capture Fort Douaumont (Verdun),” The History Channel website, 2013, http://www.history.com/this-day-in-history/german-troops-capture-fort-douaumont-verdun [accessed May 25, 2013].
“German troops capture Fort Douaumont (Verdun),” The History Channel website, http://www.history.com/this-day-in-history/german-troops-capture-fort-douaumont-verdun (accessed May 25, 2013).
German troops capture Fort Douaumont (Verdun) [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/german-troops-capture-fort-douaumont-verdun.
German troops capture Fort Douaumont (Verdun), http://www.history.com/this-day-in-history/german-troops-capture-fort-douaumont-verdun (last visited May 25, 2013).
German troops capture Fort Douaumont (Verdun). The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/german-troops-capture-fort-douaumont-verdun. Accessed May 25, 2013.