Sekar Arum Sari, Wagiyo, and Arum Arupi Kusnindar. “Studi Kepuasan Pelanggan Untuk Optimalisasi Pelayanan Warung Pak Peang”. Journal of Oikonomia 2, no. 2 (May 9, 2025): 59–67. Accessed December 28, 2025. https://ojs.edupartner.co.id/index.php/oikonomia/article/view/103.