UN-HABITAT (2020). Global State of Metropolis 2020 – Population Data Booklet. Nairobi: United Nations Human Settlements Programme.
'This Population Data Booklet presents newly global and regional metropolitan trends among the United Nations Regional Groups. It also introduces the UN-Habitat Global Database of Metropolises.' (UN-Habitat)
Download full text (pdf): https://unhabitat.org/sites/default/files/2020/06/gsm-population-data-booklet2020.pdf
