Robert E. Lee surrenders. (2013). The History Channel website. Retrieved 8:00, May 23, 2013, from http://www.history.com/this-day-in-history/robert-e-lee-surrenders.
Robert E. Lee surrenders. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/robert-e-lee-surrenders [Accessed 23 May 2013].
“Robert E. Lee surrenders.” 2013. The History Channel website. May 23 2013, 8:00 http://www.history.com/this-day-in-history/robert-e-lee-surrenders.
“Robert E. Lee surrenders,” The History Channel website, 2013, http://www.history.com/this-day-in-history/robert-e-lee-surrenders [accessed May 23, 2013].
“Robert E. Lee surrenders,” The History Channel website, http://www.history.com/this-day-in-history/robert-e-lee-surrenders (accessed May 23, 2013).
Robert E. Lee surrenders [Internet]. The History Channel website; 2013 [cited 2013 May 23] Available from: http://www.history.com/this-day-in-history/robert-e-lee-surrenders.
Robert E. Lee surrenders, http://www.history.com/this-day-in-history/robert-e-lee-surrenders (last visited May 23, 2013).
Robert E. Lee surrenders. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/robert-e-lee-surrenders. Accessed May 23, 2013.