Mukhamad Ali Safii, Shasha Bedys Fazhiera. Dampak Pelatihan dan Etos Kerja terhadap Produktivitas Karyawan di PT XYZ. optimal [Internet]. 2021 Mar. 30 [cited 2025 May 11];1(1):41-5. Available from: https://researchhub.id/index.php/optimal/article/view/4143