Martselyak, O. V., Karelin, V. V., Koropatnik, I. M. and Kalyuzhnyi, R. A. (2020) “Object and subject of staffing of the national police of Ukraine at the regional level”, Amazonia Investiga, 9(26), pp. 174–180. doi: 10.34069/AI/2020.26.02.19.