Impeachment trial of Andrew Johnson begins. (2013). The History Channel website. Retrieved 8:35, May 23, 2013, from http://www.history.com/this-day-in-history/impeachment-trial-of-andrew-johnson-begins.
Impeachment trial of Andrew Johnson begins. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/impeachment-trial-of-andrew-johnson-begins [Accessed 23 May 2013].
“Impeachment trial of Andrew Johnson begins.” 2013. The History Channel website. May 23 2013, 8:35 http://www.history.com/this-day-in-history/impeachment-trial-of-andrew-johnson-begins.
“Impeachment trial of Andrew Johnson begins,” The History Channel website, 2013, http://www.history.com/this-day-in-history/impeachment-trial-of-andrew-johnson-begins [accessed May 23, 2013].
“Impeachment trial of Andrew Johnson begins,” The History Channel website, http://www.history.com/this-day-in-history/impeachment-trial-of-andrew-johnson-begins (accessed May 23, 2013).
Impeachment trial of Andrew Johnson begins [Internet]. The History Channel website; 2013 [cited 2013 May 23] Available from: http://www.history.com/this-day-in-history/impeachment-trial-of-andrew-johnson-begins.
Impeachment trial of Andrew Johnson begins, http://www.history.com/this-day-in-history/impeachment-trial-of-andrew-johnson-begins (last visited May 23, 2013).
Impeachment trial of Andrew Johnson begins. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/impeachment-trial-of-andrew-johnson-begins. Accessed May 23, 2013.