Johnson urged to declare a state of national emergency. (2013). The History Channel website. Retrieved 10:46, May 25, 2013, from http://www.history.com/this-day-in-history/johnson-urged-to-declare-a-state-of-national-emergency.
Johnson urged to declare a state of national emergency. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/johnson-urged-to-declare-a-state-of-national-emergency [Accessed 25 May 2013].
“Johnson urged to declare a state of national emergency.” 2013. The History Channel website. May 25 2013, 10:46 http://www.history.com/this-day-in-history/johnson-urged-to-declare-a-state-of-national-emergency.
“Johnson urged to declare a state of national emergency,” The History Channel website, 2013, http://www.history.com/this-day-in-history/johnson-urged-to-declare-a-state-of-national-emergency [accessed May 25, 2013].
“Johnson urged to declare a state of national emergency,” The History Channel website, http://www.history.com/this-day-in-history/johnson-urged-to-declare-a-state-of-national-emergency (accessed May 25, 2013).
Johnson urged to declare a state of national emergency [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/johnson-urged-to-declare-a-state-of-national-emergency.
Johnson urged to declare a state of national emergency, http://www.history.com/this-day-in-history/johnson-urged-to-declare-a-state-of-national-emergency (last visited May 25, 2013).
Johnson urged to declare a state of national emergency. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/johnson-urged-to-declare-a-state-of-national-emergency. Accessed May 25, 2013.