Isnaini, Fitri, and Narwawi Pramudhiarta. “GEOGRAPHIC INFORMATION SYSTEM (GIS) FOR MAPPING OF DRUG ABUSE USING SPATIAL CORRELATION ANALYSIS IN NORTH SUMATRA PROVINCE”. Jurnal Pertahanan: Media Informasi tentang Kajian dan Strategi Pertahanan yang Mengedepankan Identity, Nasionalism dan Integrity 6, no. 3 (December 31, 2020): 416–428. Accessed July 23, 2026. https://upgradeojs.rifqisyams.id/index.php/DefenseJournal/article/view/879.