Ariesy, Debby Evrya. “PEMODELAN PENYEBARAN PENGGUNA NARKOBA”. Jurnal Matematika UNAND 7, no. 3 (February 19, 2019): 21–26. Accessed November 4, 2026. https://jmua.fmipa.unand.ac.id/index.php/jmua/article/view/365.