| Revision 4 | Amendment 1 (2024) |
| Revision 3 (2025) |
| Revision 3 | Amendment 1 (2023) |
| Revision 3 | Amendment 2 (2023) |
| Revision 3 | Amendment 3 (2024) |
| Revision 2 (2018) |
| Revision 2 | Amendment 2 (2023) |
| Revision 1 (2015) |
| Revision 1 | Amendment 1 (2016) |
| UN R127 (2013) |
| Corrigendum 1 (2013) |
| Amendment 1 (2015) |
| Earlier texts may be available through the UN Official Document System. |