Meutia Nanda, Indah Rahayu Ritonga, Amelia Putri, and Rizky Nanda Pratama. “The Relationship Between Knowledge, Attitudes, and the Role of Officers With the Management of Household Wastewater Disposal (SPAL) in Hamlet II Teluk Mengkudu Serdang Bedagai”. International Journal of Health, Economics, and Social Sciences (IJHESS) 6, no. 4 (October 22, 2024): 1039~1043. Accessed December 22, 2024. https://jurnal.unismuhpalu.ac.id/index.php/IJHESS/article/view/5699.