Poland surrenders. (2013). The History Channel website. Retrieved 2:36, May 24, 2013, from http://www.history.com/this-day-in-history/poland-surrenders.
Poland surrenders. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/poland-surrenders [Accessed 24 May 2013].
“Poland surrenders.” 2013. The History Channel website. May 24 2013, 2:36 http://www.history.com/this-day-in-history/poland-surrenders.
“Poland surrenders,” The History Channel website, 2013, http://www.history.com/this-day-in-history/poland-surrenders [accessed May 24, 2013].
“Poland surrenders,” The History Channel website, http://www.history.com/this-day-in-history/poland-surrenders (accessed May 24, 2013).
Poland surrenders [Internet]. The History Channel website; 2013 [cited 2013 May 24] Available from: http://www.history.com/this-day-in-history/poland-surrenders.
Poland surrenders, http://www.history.com/this-day-in-history/poland-surrenders (last visited May 24, 2013).
Poland surrenders. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/poland-surrenders. Accessed May 24, 2013.