Revision 4 (2023)
Revision 3 (2013)
Revision 3 | Amendment 1 (2013)
Revision 3 | Amendment 2 (2015)
Revision 3 | Amendment 3 (2015)
Revision 3 | Amendment 4 (2017)
Revision 3 | Amendment 5 (2018)
Amendment 6 (2019)
Earlier texts may be available through the UN Official Document System.