1. World Data.info by eglitis-media, “World Population Growth 2012 - 2021,” Egilitis-Media. .
2. H. Ahvenniemi and A. Huovila, “How do cities promote urban sustainability and smartness? An evaluation of the city strategies of six largest Finnish cities,” Environ. Dev. Sustain., vol. 23, no. 3, pp. 4174–4200, 2021, doi: https://doi.org/10.1007/s10668-020-00765-3.
3. A. ARY KURNIAWAN and I. PRABAWATI, “Implementasi Suroboyo Bus Di Dinas Perhubungan Kota Surabaya,” Publika, vol. 6, no. 9, 2018.
4. E. Hutapea, “Surabaya Catat Kenaikan Harga Rumah Tertinggi di Indonesia,” Kompas.com, 2018. .
5. E. Fitriana, “Implementasi Kebijakan Tata Ruang Wilayah Dalam Mewujudkan Pembangunan Kota Berkelanjutan (Studi Di Kabupaten Magetan),” J. Adm. Publik Mhs. Univ. Brawijaya, vol. 2, no. 2, pp. 217–223, 2014.