SITINJAK, tumpal janji. PERAN KUALITAS LAYANAN DAN KUALITAS PRODUK TERHADAP KEPUASAN PELANGGAN RESTORAN CEPAT SAJI MCDONALD. Jurnal Ekonomi Perusahaan, [S. l.], v. 24, n. 1, 2017. DOI: 10.46806/jep.v24i1.260. Disponível em: https://jurnal.kwikkiangie.ac.id/index.php/JEP/article/view/260. Acesso em: 26 oct. 2025.