Widiawati, S., Syaiful Rahman, and Junaedy. “Analisis Usability Aplikasi Self Service in Food Menu and Order Menggunakan Metode Heuristic Evaluation”. KHARISMA Tech, Vol. 16, no. 2, Oct. 2021, pp. 70-82, doi:10.55645/kharismatech.v16i2.126.