Rasmi Sitohang, Rahidun Simangunsong, and Joslen Sinaga. “ANALISA TINGKAT KEPUASAN PELANGGAN CV. GRAPHIA UTAMA NUSANTARA”. Jurnal Sains dan Teknologi ISTP 16, no. 2 (January 31, 2022): 111–118. Accessed July 23, 2025. https://ejurnal.istp.ac.id/index.php/jsti/article/view/115.