Wati, L., I. Putri, I. Siswanti, D. Rizka, R. Khoirunnisa, and A. Harijanto. “Design of an Arduino Uno Tool Using an Ultrasonic Sensor As a Radar in Wave Material”. Jurnal Ilmiah Wahana Pendidikan, Vol. 9, no. 15, Aug. 2023, pp. 338-42, doi:10.5281/zenodo.8210266.