How the Earth was Made Season One. (2013). The History Channel website. Retrieved 12:52, May 24, 2013, from http://www.history.com/shows/how-the-earth-was-made/photos/how-the-earth-was-made-season-one.
How the Earth was Made Season One. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/how-the-earth-was-made/photos/how-the-earth-was-made-season-one [Accessed 24 May 2013].
“How the Earth was Made Season One.” 2013. The History Channel website. May 24 2013, 12:52 http://www.history.com/shows/how-the-earth-was-made/photos/how-the-earth-was-made-season-one.
“How the Earth was Made Season One,” The History Channel website, 2013, http://www.history.com/shows/how-the-earth-was-made/photos/how-the-earth-was-made-season-one [accessed May 24, 2013].
“How the Earth was Made Season One,” The History Channel website, http://www.history.com/shows/how-the-earth-was-made/photos/how-the-earth-was-made-season-one (accessed May 24, 2013).
How the Earth was Made Season One [Internet]. The History Channel website; 2013 [cited 2013 May 24] Available from: http://www.history.com/shows/how-the-earth-was-made/photos/how-the-earth-was-made-season-one.
How the Earth was Made Season One, http://www.history.com/shows/how-the-earth-was-made/photos/how-the-earth-was-made-season-one (last visited May 24, 2013).
How the Earth was Made Season One. The History Channel website. 2013. Available at: http://www.history.com/shows/how-the-earth-was-made/photos/how-the-earth-was-made-season-one. Accessed May 24, 2013.