New book says war with Russia is greatest U.S. threat. (2013). The History Channel website. Retrieved 8:33, May 22, 2013, from http://www.history.com/this-day-in-history/new-book-says-war-with-russia-is-greatest-us-threat.
New book says war with Russia is greatest U.S. threat. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/new-book-says-war-with-russia-is-greatest-us-threat [Accessed 22 May 2013].
“New book says war with Russia is greatest U.S. threat.” 2013. The History Channel website. May 22 2013, 8:33 http://www.history.com/this-day-in-history/new-book-says-war-with-russia-is-greatest-us-threat.
“New book says war with Russia is greatest U.S. threat,” The History Channel website, 2013, http://www.history.com/this-day-in-history/new-book-says-war-with-russia-is-greatest-us-threat [accessed May 22, 2013].
“New book says war with Russia is greatest U.S. threat,” The History Channel website, http://www.history.com/this-day-in-history/new-book-says-war-with-russia-is-greatest-us-threat (accessed May 22, 2013).
New book says war with Russia is greatest U.S. threat [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/new-book-says-war-with-russia-is-greatest-us-threat.
New book says war with Russia is greatest U.S. threat, http://www.history.com/this-day-in-history/new-book-says-war-with-russia-is-greatest-us-threat (last visited May 22, 2013).
New book says war with Russia is greatest U.S. threat. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/new-book-says-war-with-russia-is-greatest-us-threat. Accessed May 22, 2013.