IPA, Universe. Introduction, UNIVERSE, Vol. 3, No. 2. Universe, [S. l.], v. 3, n. 2, 2022. DOI: 10.24036/universe.v3i2.422. Disponível em: http://universe.ppj.unp.ac.id/index.php/universe/article/view/422. Acesso em: 15 jul. 2026.