SISWANTO, S.; DEWI YUSTIANA; KOEN IRIANTO URIPAN; SUTOMO, S.; SITI NUR SOLEHA. The Effect of Competency Certification on Employee Performance with Competency Testing as a Variable Mediation (Study at PT. X). Jurnal Ekonomi, [S. l.], v. 15, n. 01, p. 14–29, 2026. Disponível em: https://www.ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/8086. Acesso em: 18 apr. 2026.