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 [Internet]. 2026 May 21 [cited 2026 May 23];4(2):1563-80. Available from: https://jurnal.dokicti.org/index.php/equivalent/article/view/1841