อ้างอิง

http://www.prc.ac.th/newart/webart/history01.html http://th.wikipedia.org/wiki/%E0%B8%A8%E0%B8%B4%E0%B8%A5%E0%B8%9B%E0%B8%B0%E0%B8%A2%E0%B8%B8%E0%B8%84%E0%B8%81%E0%B8%A3%E0%B8%B5%E0%B8%81 http://www.youtube.com/watch?v=-smCOHEw6y8