Sulistyanto, Muhammad Priyono Tri. “ancang angun mart igital obile tethoscope erbasis ada istem obile evice”. SMARTICS Journal 2, no. 1 (April 19, 2016): 1–6. ccessed July 22, 2024. http://ejournal.unikama.ac.id/index.php/jst/article/view/1504.