Noviandari, Indah, Mohammad Balafif, and Dinda Aprilia. “Peran Objek Wisata Lumpur Lapindo Sidoarjo Dalam Meningkatkan Pendapatan Masyarakat”. Cakrawala 15, no. 1 (June 16, 2021): 64–69. Accessed September 13, 2025. https://cakrawalajournal.org/index.php/cakrawala/article/view/368.