SUWANDI, Elissa. PENERAPAN SISTEM VOICE OF CUSTOMER DALAM PENINGKATAN KUALITAS PRODUK PIE SUSU PADA USAHA PIE ELIS. Jurnal Performa: Jurnal Manajemen dan Start-up Bisnis, [S. l.], v. 1, n. 5, p. 536–542, 2017. DOI: 10.37715/jp.v1i5.341. Disponível em: https://journal.uc.ac.id/index.php/performa/article/view/341. Acesso em: 13 mar. 2026.