| Revision 4 (2013) |
| Revision 4 | Amendment 1 (2014) |
| Revision 4 | Amendment 2 (2015) |
| Revision 4 | Amendment 3 (2017) |
| Revision 4 | Amendment 4 (2019) |
| Revision 3 (2005) |
| Revision 3 | Amendment 1 (2007) |
| Revision 3 | Amendment 2 (2010) |
| Revision 3 | Amendment 4 (2013) |
| Earlier texts may be available through the UN Official Document System. |