Meteor Strike. (2013). The History Channel website. Retrieved 10:59, May 25, 2013, from http://www.history.com/shows/life-after-people/videos/playlists/how-might-people-disappear.
Meteor Strike. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/life-after-people/videos/playlists/how-might-people-disappear [Accessed 25 May 2013].
“Meteor Strike.” 2013. The History Channel website. May 25 2013, 10:59 http://www.history.com/shows/life-after-people/videos/playlists/how-might-people-disappear.
“Meteor Strike,” The History Channel website, 2013, http://www.history.com/shows/life-after-people/videos/playlists/how-might-people-disappear [accessed May 25, 2013].
“Meteor Strike,” The History Channel website, http://www.history.com/shows/life-after-people/videos/playlists/how-might-people-disappear (accessed May 25, 2013).
Meteor Strike [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/shows/life-after-people/videos/playlists/how-might-people-disappear.
Meteor Strike, http://www.history.com/shows/life-after-people/videos/playlists/how-might-people-disappear (last visited May 25, 2013).
Meteor Strike. The History Channel website. 2013. Available at: http://www.history.com/shows/life-after-people/videos/playlists/how-might-people-disappear. Accessed May 25, 2013.