1.http://www.bloggang.com/viewdiary.php?id=madamozzy&month=04-2007&date=16&group=1&gblog=34

2.http://www.animallovely.com/

3.http://www.moohin.com

4.http://www.animallovely.com/?tag=%E0%B8%AB%E0%B8%A1%E0%B8%B5%E0%B8%82%E0%B8%B1%E0%B9%89%E0%B8%A7%E0%B9%82%E0%B8%A5%E0%B8%81

5.http://ruchanee.blogspot.com/2008/06/blog-post_24.html

6.http://www.2snake2fish.com/content/

7.http://www.biotec.or.th/brt/index.php?option=com_content&view=article&id=207:half-blood-lar&catid=57:annimal&Itemid=54

8.The David C.Cook Foundation. Original English text. 1969

9.http://www4.msu.ac.th/satit/studentProj/2547/pj102-2-2547/g05-GrongsriayuttayaHistory/chang.html

10.http://www.thairath.co.th/content/edu/34728

11.atcloud.com/stories/68457