Widodo, Anton, and Ahmad Riyadh UB. “Effectiveness of the KOTAKU (City Without Slums) Program in Sidoarjo Regency”. Journal of Geosciences and Environmental Studies 1, no. 1 (March 31, 2024): 18. Accessed April 27, 2025. https://journal.pubmedia.id/index.php/ijgaes/article/view/3232.