Britain successfully tests A-bomb. (2013). The History Channel website. Retrieved 6:25, May 21, 2013, from http://www.history.com/this-day-in-history/britain-successfully-tests-a-bomb.
Britain successfully tests A-bomb. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/britain-successfully-tests-a-bomb [Accessed 21 May 2013].
“Britain successfully tests A-bomb.” 2013. The History Channel website. May 21 2013, 6:25 http://www.history.com/this-day-in-history/britain-successfully-tests-a-bomb.
“Britain successfully tests A-bomb,” The History Channel website, 2013, http://www.history.com/this-day-in-history/britain-successfully-tests-a-bomb [accessed May 21, 2013].
“Britain successfully tests A-bomb,” The History Channel website, http://www.history.com/this-day-in-history/britain-successfully-tests-a-bomb (accessed May 21, 2013).
Britain successfully tests A-bomb [Internet]. The History Channel website; 2013 [cited 2013 May 21] Available from: http://www.history.com/this-day-in-history/britain-successfully-tests-a-bomb.
Britain successfully tests A-bomb, http://www.history.com/this-day-in-history/britain-successfully-tests-a-bomb (last visited May 21, 2013).
Britain successfully tests A-bomb. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/britain-successfully-tests-a-bomb. Accessed May 21, 2013.