Alexander, Alexander, Zainal Abidin Pakpahan, and Nimrot Siahaan. “The Effectiveness of the National Narcotics Agency (BNN) in Preventing and Controlling Drug Trafficking in Rokan Hilir Regency”. International Journal of Educational Research & Social Sciences 5, no. 1 (February 28, 2024): 127–131. Accessed May 20, 2024. https://ijersc.org/index.php/go/article/view/768.