Hutapea, R. J. “Four-Wheel Patrol Efforts by the Turjawali Unit of the Samapta Unit to Prevent Crimes of Attacks in the Legal Area of ​​the Nganjuk Police”. Police Studies Review, Vol. 8, no. 10, Oct. 2024, http://journal.akpol.ac.id/index.php/psr/article/view/1391.