America's Book of Secrets: Presidential Transports. (2013). The History Channel website. Retrieved 7:27, May 25, 2013, from http://www.history.com/shows/americas-book-of-secrets/videos/playlists/full-episodes.
America's Book of Secrets: Presidential Transports. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/americas-book-of-secrets/videos/playlists/full-episodes [Accessed 25 May 2013].
“America's Book of Secrets: Presidential Transports.” 2013. The History Channel website. May 25 2013, 7:27 http://www.history.com/shows/americas-book-of-secrets/videos/playlists/full-episodes.
“America's Book of Secrets: Presidential Transports,” The History Channel website, 2013, http://www.history.com/shows/americas-book-of-secrets/videos/playlists/full-episodes [accessed May 25, 2013].
“America's Book of Secrets: Presidential Transports,” The History Channel website, http://www.history.com/shows/americas-book-of-secrets/videos/playlists/full-episodes (accessed May 25, 2013).
America's Book of Secrets: Presidential Transports [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/shows/americas-book-of-secrets/videos/playlists/full-episodes.
America's Book of Secrets: Presidential Transports, http://www.history.com/shows/americas-book-of-secrets/videos/playlists/full-episodes (last visited May 25, 2013).
America's Book of Secrets: Presidential Transports. The History Channel website. 2013. Available at: http://www.history.com/shows/americas-book-of-secrets/videos/playlists/full-episodes. Accessed May 25, 2013.