Hoesin K. Optimization of Dikmas Lantas by Kamsel Unit in the Framework of Suppressing Traffic Violations of Riding Motorcycles Without Wearing a Helmet at Polresta Magelang. APSRJ [Internet]. 2024Sep.13 [cited 2024Nov.22];4(5). Available from: http://journal.akpol.ac.id/index.php/apsrj/article/view/982