แหล่งอ้างอิง

https://sites.google.com/site/wassamolpang/canghwad-xudrthani/01-saylaksn


https://th.wikipedia.org/wiki/%E0%B8%AD%E0%B8%B3%E0%B9%80%E0%B8%A0%E0%B8%AD%E0%B8%9A%E0%B8%B1%E0%B8%A7%E0%B9%83%E0%B8%AB%E0%B8%8D%E0%B9%88


http://www.thaitambon.com/