Bibliography
http://en.wikipedia.org/wiki/Aztec_calendar
http://www.aztec-history.com/ancient-aztec-art.html
http://aztecgroup.blogspot.com.au/p/aztec-architecture.html
http://www.azteccalendar.com/azteccalendar.html
http://www.metmuseum.org/toah/hd/azss/hd_azss.htm
http://www.aztec-indians.com/aztec-art.html
https://www.courses.psu.edu/anth/anth008_cmg149/aztec.html
http://www.aztec-history.com/aztec-temples.html
http://www.aztec-history.com/fall-of-the-aztec-empire.html
http://en.wikipedia.org/wiki/Aztec_calendar
http://www.aztec-history.com/ancient-aztec-art.html
http://aztecgroup.blogspot.com.au/p/aztec-architecture.html
http://www.azteccalendar.com/azteccalendar.html
http://www.metmuseum.org/toah/hd/azss/hd_azss.htm
http://www.aztec-indians.com/aztec-art.html
https://www.courses.psu.edu/anth/anth008_cmg149/aztec.html
http://www.aztec-history.com/aztec-temples.html
http://www.aztec-history.com/fall-of-the-aztec-empire.html