Khapso, Ulfa Eka. “Perancangan Perbaikan Proses Bisnis Pelayanan Ke Pelanggan Di Toko Sudarko Menggunakan Metode Business Process Improvement”. Innovative: Journal Of Social Science Research, vol. 3, no. 2, June 2023, pp. 13775-87, https://j-innovative.org/index.php/Innovative/article/view/1987.