Wahyu, Ellyn Eka, Yekie Senja Oktora, and Lydia Ery Octalina. 2025. “Certification and Lecturers’ Performance in State Polytechnic: A Mediating Role of Psychological Empowerment”. Jurnal Bisnis Dan Manajemen 11 (2):214-25. https://doi.org/10.26905/jbm.v11i2.13946.