The Silk Road. (2013). The History Channel website. Retrieved 6:17, June 20, 2013, from http://www.history.com/shows/mankind-the-story-of-all-of-us/videos/playlists/web-exclusives.
The Silk Road. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/mankind-the-story-of-all-of-us/videos/playlists/web-exclusives [Accessed 20 Jun 2013].
“The Silk Road.” 2013. The History Channel website. Jun 20 2013, 6:17 http://www.history.com/shows/mankind-the-story-of-all-of-us/videos/playlists/web-exclusives.
“The Silk Road,” The History Channel website, 2013, http://www.history.com/shows/mankind-the-story-of-all-of-us/videos/playlists/web-exclusives [accessed Jun 20, 2013].
“The Silk Road,” The History Channel website, http://www.history.com/shows/mankind-the-story-of-all-of-us/videos/playlists/web-exclusives (accessed Jun 20, 2013).
The Silk Road [Internet]. The History Channel website; 2013 [cited 2013 Jun 20] Available from: http://www.history.com/shows/mankind-the-story-of-all-of-us/videos/playlists/web-exclusives.
The Silk Road, http://www.history.com/shows/mankind-the-story-of-all-of-us/videos/playlists/web-exclusives (last visited Jun 20, 2013).
The Silk Road. The History Channel website. 2013. Available at: http://www.history.com/shows/mankind-the-story-of-all-of-us/videos/playlists/web-exclusives. Accessed Jun 20, 2013.