ភាសាខ្មែរ 
ធ្វើបច្ចុប្បន្នភាពលេខទូរសព័្ទ និងលេខអត្តសញ្ញាណប័ណ្ណសញ្ជាតិខ្មែរ
សេចក្ដីណែនាំ លេខ២០/២៣ ស្តីពីការព្យួរកិច្ចសន្យាការងារកម្មករនិយោជិតធ្វើការនៅរោងចក្រក្នុងវិស័យវាយនភណ្ឌ កាត់ដេរ ផលិតស្បែកជើង និងផលិតផលិតផលធ្វើដំណើរនិងកាបូប
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https://www.mlvt.gov.kh/index.php/en/official-docs/notification-guidelines/51-%E1%9E%9F%E1%9F%81%E1%9E%85%E1%9E%80%E1%9F%92%E1%9E%8A%E1%9E%B8%E1%9E%87%E1%9E%BC%E1%9E%93%E1%9E%8A%E1%9F%86%E1%9E%8E%E1%9E%B9%E1%9E%84-%E1%9E%9F%E1%9F%81%E1%9E%85%E1%9E%80%E1%9F%92%E1%9E%8A%E1%9E%B8%E1%9E%8E%E1%9F%82%E1%9E%93%E1%9E%B6%E1%9F%86/2119.html#sigProIdfebce82070