The Maya and December 21, 2012. (2013). The History Channel website. Retrieved 4:42, May 19, 2013, from http://www.history.com/shows/countdown-to-apocalypse/articles/the-maya-and-december-21-2012.
The Maya and December 21, 2012. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/countdown-to-apocalypse/articles/the-maya-and-december-21-2012 [Accessed 19 May 2013].
“The Maya and December 21, 2012.” 2013. The History Channel website. May 19 2013, 4:42 http://www.history.com/shows/countdown-to-apocalypse/articles/the-maya-and-december-21-2012.
“The Maya and December 21, 2012,” The History Channel website, 2013, http://www.history.com/shows/countdown-to-apocalypse/articles/the-maya-and-december-21-2012 [accessed May 19, 2013].
“The Maya and December 21, 2012,” The History Channel website, http://www.history.com/shows/countdown-to-apocalypse/articles/the-maya-and-december-21-2012 (accessed May 19, 2013).
The Maya and December 21, 2012 [Internet]. The History Channel website; 2013 [cited 2013 May 19] Available from: http://www.history.com/shows/countdown-to-apocalypse/articles/the-maya-and-december-21-2012.
The Maya and December 21, 2012, http://www.history.com/shows/countdown-to-apocalypse/articles/the-maya-and-december-21-2012 (last visited May 19, 2013).
The Maya and December 21, 2012. The History Channel website. 2013. Available at: http://www.history.com/shows/countdown-to-apocalypse/articles/the-maya-and-december-21-2012. Accessed May 19, 2013.