FAKHRUDIYANTO, N. Peran Unit Dikyasa Satuan Lalu Lintas Polres Purworejo dalam Menekan Angka Kecelakaan Lalu Lintas: The Role of Dikyasa Traffic Unit Police of Purworejo Regional Police in Suppressing Traffic Accident Rates. Advances in Police Science Research Journal, v. 1, n. 1, p. 195-244, 30 Jan. 2017.