IRVANDA, Rico; FRINALDI, Aldri; REMBRANDT, Rembrandt. The Analysis of the Broken Law Enforcement Chain of Regional Regulation No. 4/2019 Sanctions: A Study on Apparatus Constraints (Environmental Services) and Perception of Sanction Credibility in Payakumbuh City. Science and Environmental Journal for Postgraduate, [S. l.], v. 7, n. 2, p. 102–110, 2026. DOI: 10.24036/senjop.v7i2.297. Disponível em: http://senjop.ppj.unp.ac.id/index.php/senjop/article/view/297. Acesso em: 26 jul. 2026.