PUTRI, O. D.; GUNADI, W. PENGARUH KUALITAS PELAYANAN DAN PENGEMBANGAN PRODUK BISKUIT TERHADAP VOLUME PENJUALAN PT. MAKINDO PERDANA. JURNAL ILMIAH M-PROGRESS, [S. l.], v. 12, n. 2, 2022. DOI: 10.35968/m-pu.v12i2.906. Disponível em: https://journal.universitassuryadarma.ac.id/index.php/ilmiahm-progress/article/view/906. Acesso em: 9 nov. 2025.