Sitepu, Kezia Prissilia, Farida Gultom, Syaifuddin, and Rikki Paulus Gultom. “Perancangan Sistem Informasi Self- Order Dengan Teknologi QR Pada Healing Cafe”. J-CEKI : Jurnal Cendekia Ilmiah 5, no. 1 (December 17, 2025): 3679–3686. Accessed August 26, 2026. https://al-haramjournal.co.id/J-CEKI/article/view/12961.