Sofyan Ansori Tondang, Kiki Farida Ferine, Darmilisani. The Effect Of Competence And Work Environment On Performance Employees With The Implementation Of Corruption-Free Areas As An Intervening Variable At  The Class Ii Immigration Office Tpi Pematang Siantar. Equivalent . 2026;4(2):1563-1580. doi:10.61994/equivalent.v4i2.1841