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.