| Revision 3 (2015) |
| Revision 3 | Amendment 1 (2017) |
| Revision 3 | Amendment 2 (2019) |
| Revision 2 (2013) |
| Revision 2 | Amendment 1 (2015) |
| Revision 2 | Amendment 2 (2017) |
| Revision 1 | Amendment 2 | Corrigendum 1 (2010) |
| Earlier texts may be available through the UN Official Document System. |