Barus, Hafiza Putri. “Analisis Kegiatan Monitoring Harga Pasar Di Bidang Perdagangan Dalam Negeri (Studi Kasus Dinas Perindustrian, Perdagangan, Energi Dan Sumber Daya Mineral Provinsi Sumatera Utara)”. Innovative: Journal Of Social Science Research, vol. 3, no. 4, Sept. 2023, pp. 6343-50, http://j-innovative.org/index.php/Innovative/article/view/4066.