Keel of the USS Monitor is laid. (2013). The History Channel website. Retrieved 1:30, May 25, 2013, from http://www.history.com/this-day-in-history/keel-of-the-monitor-laid.
Keel of the USS Monitor is laid. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/keel-of-the-monitor-laid [Accessed 25 May 2013].
“Keel of the USS Monitor is laid.” 2013. The History Channel website. May 25 2013, 1:30 http://www.history.com/this-day-in-history/keel-of-the-monitor-laid.
“Keel of the USS Monitor is laid,” The History Channel website, 2013, http://www.history.com/this-day-in-history/keel-of-the-monitor-laid [accessed May 25, 2013].
“Keel of the USS Monitor is laid,” The History Channel website, http://www.history.com/this-day-in-history/keel-of-the-monitor-laid (accessed May 25, 2013).
Keel of the USS Monitor is laid [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/keel-of-the-monitor-laid.
Keel of the USS Monitor is laid, http://www.history.com/this-day-in-history/keel-of-the-monitor-laid (last visited May 25, 2013).
Keel of the USS Monitor is laid. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/keel-of-the-monitor-laid. Accessed May 25, 2013.