Soviet forces penetrate the siege of Leningrad. (2013). The History Channel website. Retrieved 7:15, May 24, 2013, from http://www.history.com/this-day-in-history/soviet-forces-penetrate-the-siege-of-leningrad.
Soviet forces penetrate the siege of Leningrad. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/soviet-forces-penetrate-the-siege-of-leningrad [Accessed 24 May 2013].
“Soviet forces penetrate the siege of Leningrad.” 2013. The History Channel website. May 24 2013, 7:15 http://www.history.com/this-day-in-history/soviet-forces-penetrate-the-siege-of-leningrad.
“Soviet forces penetrate the siege of Leningrad,” The History Channel website, 2013, http://www.history.com/this-day-in-history/soviet-forces-penetrate-the-siege-of-leningrad [accessed May 24, 2013].
“Soviet forces penetrate the siege of Leningrad,” The History Channel website, http://www.history.com/this-day-in-history/soviet-forces-penetrate-the-siege-of-leningrad (accessed May 24, 2013).
Soviet forces penetrate the siege of Leningrad [Internet]. The History Channel website; 2013 [cited 2013 May 24] Available from: http://www.history.com/this-day-in-history/soviet-forces-penetrate-the-siege-of-leningrad.
Soviet forces penetrate the siege of Leningrad, http://www.history.com/this-day-in-history/soviet-forces-penetrate-the-siege-of-leningrad (last visited May 24, 2013).
Soviet forces penetrate the siege of Leningrad. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/soviet-forces-penetrate-the-siege-of-leningrad. Accessed May 24, 2013.