sujianto, ikhsan, and syofian. “STRENGTHENING INSTITUTIONS IN THE EFFORT ADAT CUSTOMARY LAW ENFORCEMENT IN ILLEGAL GOLD MINING AREAS AFFECTED”. Jurnal Niara 12, no. 1 (May 10, 2019): 19- 28. Accessed April 5, 2020. https://journal.unilak.ac.id/index.php/nia/article/view/2284.