| 1. | Planning , environment and lands bureau technical circular 规划环境地政局技术通告 |
| 2. | Highways department technical circular hyd tc 7 2006 路政署科技通函hyd tc 7 2006只供英文版 |
| 3. | Highways department technical circular hyd tc 1 2007 路政署科技通函hyd tc 1 2007只供英文版 |
| 4. | Environment , transport and works bureau technical circular 34 2002 环境运输及工务局技术通告 |
| 5. | Civil engineering department technical circular 土木工程署技术通告 |
| 6. | Highways department technical circular hyd tc 10 2006 路政署科技通函hyd tc 10 2006只供英文版 |
| 7. | Highways department technical circular hyd tc 11 2006 路政署科技通函hyd tc 11 2006只供英文版 |
| 8. | Highways department technical circular hyd tc 1 2005 added 路政署科技通函hyd tc 1 2005只供英文版 |
| 9. | Highways department technical circulars 路政署科技通函 |
| 10. | Works bureau technical circular 工务局技术通告 |