How Washington D.C. Got Its Shape. (2013). The History Channel website. Retrieved 10:39, May 22, 2013, from http://www.history.com/shows/how-the-states-got-their-shapes/videos/playlists/web-exclusives.
How Washington D.C. Got Its Shape. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/how-the-states-got-their-shapes/videos/playlists/web-exclusives [Accessed 22 May 2013].
“How Washington D.C. Got Its Shape.” 2013. The History Channel website. May 22 2013, 10:39 http://www.history.com/shows/how-the-states-got-their-shapes/videos/playlists/web-exclusives.
“How Washington D.C. Got Its Shape,” The History Channel website, 2013, http://www.history.com/shows/how-the-states-got-their-shapes/videos/playlists/web-exclusives [accessed May 22, 2013].
“How Washington D.C. Got Its Shape,” The History Channel website, http://www.history.com/shows/how-the-states-got-their-shapes/videos/playlists/web-exclusives (accessed May 22, 2013).
How Washington D.C. Got Its Shape [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/shows/how-the-states-got-their-shapes/videos/playlists/web-exclusives.
How Washington D.C. Got Its Shape, http://www.history.com/shows/how-the-states-got-their-shapes/videos/playlists/web-exclusives (last visited May 22, 2013).
How Washington D.C. Got Its Shape. The History Channel website. 2013. Available at: http://www.history.com/shows/how-the-states-got-their-shapes/videos/playlists/web-exclusives. Accessed May 22, 2013.