Nazara S, Hulu PF, Mendrofa Y, Telaumbanua A. Influence of Standard Operational Procedures on Employee Performance in Technical Preparation for Public Order and Community Tranquility at the Regional Civil Service Police Unit of North Nias District. probis [Internet]. 2024 Apr. 30 [cited 2024 Sep. 28];15(2):155-60. Available from: http://ejournal.joninstitute.org/index.php/ProBisnis/article/view/489