SIAGIAN, Nilasari. POPULATION DISTRIBUTION AND DENSITY CHANGING PATTERN IN SUMATERA UTARA. JURNAL GEOGRAFI, [S. l.], v. 13, n. 2, p. 225–234, 2021. DOI: 10.24114/jg.v13i2.25428. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/geo/article/view/25428. Acesso em: 31 dec. 2025.