Iwan Mulyana. “Peningkatan Kualitas Pelayanan Kepada Konsumen Akhir Melalui Variasi Produk Kue UKM”. E-Coops-Day 2, no. 1 (June 11, 2021): 33–42. Accessed July 22, 2024. https://journal.ikopin.ac.id/index.php/ecoopsday/article/view/467.