Harmonization of Regulatory Authority between the Indonesian National Police and the National Narcotics Agency in the Use of Undercover Buy Techniques in Narcotics Crime Investigations. SINGOSARI: Jur. P3SI Wil. Jatim [Internet]. 2026 Jul. 21 [cited 2026 Jul. 25];3(2):64-71. Available from: https://jurnal.sekawansiji.org/index.php/singosari/article/view/146