Johnson Signs Medicare Bill Into Law. (2013). The History Channel website. Retrieved 12:33, May 23, 2013, from http://www.history.com/speeches/johnson-signs-medicare-bill-into-law.
Johnson Signs Medicare Bill Into Law. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/speeches/johnson-signs-medicare-bill-into-law [Accessed 23 May 2013].
“Johnson Signs Medicare Bill Into Law.” 2013. The History Channel website. May 23 2013, 12:33 http://www.history.com/speeches/johnson-signs-medicare-bill-into-law.
“Johnson Signs Medicare Bill Into Law,” The History Channel website, 2013, http://www.history.com/speeches/johnson-signs-medicare-bill-into-law [accessed May 23, 2013].
“Johnson Signs Medicare Bill Into Law,” The History Channel website, http://www.history.com/speeches/johnson-signs-medicare-bill-into-law (accessed May 23, 2013).
Johnson Signs Medicare Bill Into Law [Internet]. The History Channel website; 2013 [cited 2013 May 23] Available from: http://www.history.com/speeches/johnson-signs-medicare-bill-into-law.
Johnson Signs Medicare Bill Into Law, http://www.history.com/speeches/johnson-signs-medicare-bill-into-law (last visited May 23, 2013).
Johnson Signs Medicare Bill Into Law. The History Channel website. 2013. Available at: http://www.history.com/speeches/johnson-signs-medicare-bill-into-law. Accessed May 23, 2013.