Afriska Nababan et al. 2025. Analysis of the Effectiveness of the Assessment Center as A Competency Testing Method for Police Sector Chiefs (KAPOLSEK) in Improving Police Performance within the Metro Jaya Regional Police. Jurnal Greenation Sosial dan Politik. 3, 3 (Aug. 2025), 568–577. DOI:https://doi.org/10.38035/jgsp.v3i3.438.