Silalahi, Maria, H. Abdul Razak Nasution, and Rahul Fikri. 2025. “Implementation of The Police Professional Code of Ethics In Handling Violations of Member Discipline In Propam Polresta Deli Serdang”. Jurnal ISO: Jurnal Ilmu Sosial, Politik Dan Humaniora 5 (1):8. https://doi.org/10.53697/iso.v5i1.2502.