Revision 2 (2025)
Revision 2 | Amendment 1 (2024)
Revision 2 | Amendment 2 (2024)
Revision 1 (2016)
Revision 1 | Amendment 1 (2017)
Revision 1 | Amendment 2 (2020)
Revision 1 | Amendment 3 (2022)
Revision 1 | Amendment 4 (2023)
Revision 1 | Amendment 5 (2024)
UN R135 (2015)
Amendment 1 (2016)
Amendment 2 (2020)
Amendment 3 (2024)
Earlier texts may be available through the UN Official Document System.