The Warsaw Pact is formed. (2013). The History Channel website. Retrieved 5:27, May 26, 2013, from http://www.history.com/this-day-in-history/the-warsaw-pact-is-formed.
The Warsaw Pact is formed. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/the-warsaw-pact-is-formed [Accessed 26 May 2013].
“The Warsaw Pact is formed.” 2013. The History Channel website. May 26 2013, 5:27 http://www.history.com/this-day-in-history/the-warsaw-pact-is-formed.
“The Warsaw Pact is formed,” The History Channel website, 2013, http://www.history.com/this-day-in-history/the-warsaw-pact-is-formed [accessed May 26, 2013].
“The Warsaw Pact is formed,” The History Channel website, http://www.history.com/this-day-in-history/the-warsaw-pact-is-formed (accessed May 26, 2013).
The Warsaw Pact is formed [Internet]. The History Channel website; 2013 [cited 2013 May 26] Available from: http://www.history.com/this-day-in-history/the-warsaw-pact-is-formed.
The Warsaw Pact is formed, http://www.history.com/this-day-in-history/the-warsaw-pact-is-formed (last visited May 26, 2013).
The Warsaw Pact is formed. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/the-warsaw-pact-is-formed. Accessed May 26, 2013.