Ario, Firman. 2021. “ANALYSIS OF COMMERCIAL CUSTOMER SATISFACTION LEVEL IN PT PERUSAHAAN GAS NEGARA (PERSERO) TBK SBU DISTRIBUSI WILAYAH III SUMATERA BAGIAN UTARA”. International Journal of Economic, Technology and Social Sciences (Injects) 2 (2):498-505. https://doi.org/10.53695/injects.v2i2.541.