Saputra, Nanda Lutfian Eki, and Sri Wulandari. “Development of a QR Code-Based Self-Ordering System Integrated With Midtrans and a Kitchen Display System”. JSAI (Journal Scientific and Applied Informatics), vol. 9, no. 3, Nov. 2026, pp. 457-66, doi:10.36085/jsai.v9i3.12074.