<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">World Commission on Environment and Development</hi> (1987): <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">Our Common Future</hi>. <ref xmlns="http://www.tei-c.org/ns/1.0" target="http://www.un-documents.net/our-common-future.pdf">http://www.un-documents.net/our-common-future.pdf</ref> [letzter Zugriff 17. August 2016].