1. United Nations Transforming Our World: The 2030 Agenda for Sustainable Development,2015
2. OECD Development Co-Operation Report 1997: Efforts and Policies of the Members of the Development Assistance Committee
https://read.oecd-ilibrary.org/development/development-co-operation-report-1997_dcr-1997-en#page1
3. UNEP 2012 Annual Report
https://www.unep.org/resources/annual-report/unep-2012-annual-report
4. UNEP Programme Performance Report 2016
https://www.unep.org/resources/report/unep-programme-performance-report-2016
5. United Nations Conference on the Human Environment, Stockholm 1972
https://www.un.org/en/conferences/environment/stockholm1972