Richard Nixon takes office. (2013). The History Channel website. Retrieved 1:28, May 20, 2013, from http://www.history.com/this-day-in-history/richard-nixon-takes-office.
Richard Nixon takes office. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/richard-nixon-takes-office [Accessed 20 May 2013].
“Richard Nixon takes office.” 2013. The History Channel website. May 20 2013, 1:28 http://www.history.com/this-day-in-history/richard-nixon-takes-office.
“Richard Nixon takes office,” The History Channel website, 2013, http://www.history.com/this-day-in-history/richard-nixon-takes-office [accessed May 20, 2013].
“Richard Nixon takes office,” The History Channel website, http://www.history.com/this-day-in-history/richard-nixon-takes-office (accessed May 20, 2013).
Richard Nixon takes office [Internet]. The History Channel website; 2013 [cited 2013 May 20] Available from: http://www.history.com/this-day-in-history/richard-nixon-takes-office.
Richard Nixon takes office, http://www.history.com/this-day-in-history/richard-nixon-takes-office (last visited May 20, 2013).
Richard Nixon takes office. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/richard-nixon-takes-office. Accessed May 20, 2013.