Hasibuan M, Nurdadyansyah N, Rifai MA, Bintono W, Andrianto D, Japal A. Improvement of Lampung Police Services Through Siger Precision Lampung 21 (PSP-21). litdig [Internet]. 2023 Jul. 30 [cited 2024 Dec. 22];1(2):61-5. Available from: https://jurnal.relawantik.or.id/ict/article/view/92