แหล่งอ้างอิง
- http://siamclassview.edu.chula.ac.th/cuds49092/blog/view.php?Bid=1244787598582162&msite=cuds49092
- http://writer.dek-d.com/Rosy/story/viewlongc.php?id=638207&chapter=7
- http://i-love-thai.exteen.com/20090902/entry-4
- http://writer.dek-d.com/toshirou/story/view.php?id=525308
- https://www.myfirstbrain.com/student_view.aspx?ID=40663
- http://guru.sanook.com/search/
- http://www.sahavicha.com/?name=media&file=readmedia&id=1011
- http://www.trueplookpanya.com/true/knowledge_detail.php?mul_content_id=2212 http://www.trueplookpanya.com/true/knowledge_detail.php?mul_content_id=2212
- http://www.trueplookpanya.com/true/knowledge_detail.php?mul_content_id=2212
- http://lakornram.igetweb.com/
- หนังสือภาษาไทย วิวิธภาษา ม.4