Germany prepares for invasion of Poland. (2013). The History Channel website. Retrieved 3:40, May 22, 2013, from http://www.history.com/this-day-in-history/germany-prepares-for-invasion-of-poland.
Germany prepares for invasion of Poland. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/germany-prepares-for-invasion-of-poland [Accessed 22 May 2013].
“Germany prepares for invasion of Poland.” 2013. The History Channel website. May 22 2013, 3:40 http://www.history.com/this-day-in-history/germany-prepares-for-invasion-of-poland.
“Germany prepares for invasion of Poland,” The History Channel website, 2013, http://www.history.com/this-day-in-history/germany-prepares-for-invasion-of-poland [accessed May 22, 2013].
“Germany prepares for invasion of Poland,” The History Channel website, http://www.history.com/this-day-in-history/germany-prepares-for-invasion-of-poland (accessed May 22, 2013).
Germany prepares for invasion of Poland [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/germany-prepares-for-invasion-of-poland.
Germany prepares for invasion of Poland, http://www.history.com/this-day-in-history/germany-prepares-for-invasion-of-poland (last visited May 22, 2013).
Germany prepares for invasion of Poland. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/germany-prepares-for-invasion-of-poland. Accessed May 22, 2013.