Sukmana, Oman. “Konflik Horisontal Antar Kelompok Korban Bencana Lumpur Lapindo”. Sospol 3, no. 1 (June 9, 2017): 78–98. Accessed November 22, 2024. https://ejournal.umm.ac.id/index.php/sospol/article/view/4402.