| UN R23: Revision 4 (2013) |
| UN R23: Revision 4-Amendment 1 (2015) |
| Revision 4 | Amendment 2 (2017) |
| Revision 4 | Amendment 3 (2018) |
| Revision 4 | Amendment 4 (2019) |
| UN R23: Revision 3-Corrigendum 1 (2010) |
| UN R23: Revision 3-Amendment 1 (2008) |
| UN R23: Revision 3-Amendment 2 (2011) |
| UN R23: Revision 3-Amendment 3 (2011) |
| UN R23: Revision 3-Amendment 4 (2012) |
| UN R23: Revision 3 (2008) |
| Earlier texts may be available through the UN Official Document System. |