RAMADHAN, ALI, and Razali Razali. “PENILAIAN KUALITAS JASA PELAYANAN LEMBAGA BIMBINGAN BELAJAR PRIMAGAMA BERDASARKAN PREFERENSI KONSUMEN (Studi Kasus: Primagama Cabang Medan)”. Nusantara of Engineering (NOE) 5, no. 2 (December 17, 2022): 66–71. Accessed December 22, 2024. https://ojs.unpkediri.ac.id/index.php/noe/article/view/19021.