http://www.gotoknow.org/dashboard/home#/files/868013สอนโดย อาจารย์ทิวากร  เหล่าลือชา

http://cdn.gotoknow.org/assets/media/files/000/868/013/original_%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%A8%E0%B8%B6%E0%B8%81%E0%B8%A9%E0%B8%B2%E0%B8%9A%E0%B8%A3%E0%B8%B4%E0%B8%9A%E0%B8%97%E0%B8%8A%E0%B8%B8%E0%B8%A1%E0%B8%8A%E0%B8%99%E0%B8%9A%E0%B9%89%E0%B8%B2%E0%B8%99%E0%B8%99%E0%B8%B2%E0%B9%82%E0%B8%AA%E0%B8%81_by_%E0%B8%81%E0%B8%A5%E0%B8%B8%E0%B9%88%E0%B8%A1%E0%B9%81%E0%B8%A1%E0%B8%A5%E0%B8%87%E0%B8%97%E0%B8%B1%E0%B8%9A%E0%B8%8A%E0%B8%B8%E0%B8%A1%E0%B8%8A%E0%B8%99.pptx?1357967972