Irvanda, Rico, Aldri Frinaldi, and 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 7, no. 2 (January 27, 2026): 102–110. Accessed April 19, 2026. http://senjop.ppj.unp.ac.id/index.php/senjop/article/view/297.