Pakpahan EF, Sinurat HY, Tanjung NF. PERAN OMBUDSMAN TERHADAP PERLINDUNGAN KONSUMEN TERKAIT LONJAKAN TAGIHAN AIR PT. PDAM KOTA MEDAN. LS [Internet]. 2022 Sep. 6 [cited 2026 Apr. 24];6(2):199-211. Available from: https://journal.umpo.ac.id/index.php/LS/article/view/5379