Aliyah, Raden Ayu Alfirah, et al. “Goal Directed Design Method on UI UX Design Mobile-Based Application for Preventing Waste Dumping”. Ultima InfoSys : Jurnal Ilmu Sistem Informasi, vol. 15, no. 2, Dec. 2024, pp. 113-21, doi:10.31937/si.v15i2.3864.