AN EMPIRICAL STUDY OF SOURCES OF LAW TO UNDERSTAND THEIR ORIGIN, MODIFICATION AND EXISTENCE IN THE ANCIENT AND MODERN SOCIETIES. Journal of Research Administration, [S. l.], v. 5, n. 2, p. 4122–4131, 2023. Disponível em: https://journlra.org/index.php/jra/article/view/565.. Acesso em: 27 oct. 2026.