| UN R4: Revision 3 (2013) |
| UN R4: Revision 3-Corrigendum 1 (2015) |
| UN R4: Revision 3-Amendment 1 (2015) |
| Revision 3 | Amendment 2 (2017) |
| Revision 3 | Amendment 3 (2018) |
| Revision 3 | Amendment 4 (2019) |
| UN R4: Revision 2 (2006) |
| UN R4: Revision 2-Corrigendum 1 (2008) |
| UN R4: Revision 2-Amendment 1 (2007) |
| UN R4: Revision 2-Amendment 2 (2008) |
| UN R4: Revision 2-Amendment 3 (2008) |
| UN R4: Revision 2-Amendment 4 (2011) |
| Earlier texts may be available through the UN Official Document System. |