1
https://www.dol.go.th/DocLib/%E0%B8%AD%E0%B8%8A21.pdf
  
2
https://www.dol.go.th/DocLib/%E0%B8%97%E0%B8%AD4.pdf
  
3
https://www.dol.go.th/Documents/td21.pdf
  
4
https://www.dol.go.th/DocLib7/sst/och1-och30.pdf
  
5
https://www.dol.go.th/estate/Pages/sst01.pdf
  
6
https://www.dol.go.th/DocLib/td9.pdf
  
7
https://www.dol.go.th/DocLib/td9-1.pdf
  
8
https://www.dol.go.th/Pages/%E0%B9%81%E0%B8%9A%E0%B8%9A%E0%B8%9F%E0%B8%AD%E0%B8%A3%E0%B9%8C%E0%B8%A1%E0%B8%95%E0%B9%88%E0%B8%B2%E0%B8%87%E0%B9%86.aspx
  
9
https://www.dol.go.th/Documents/pdf_file_/download/Form-Network.pdf