Muhamad Ilyas Fauzi (2024) “Optimalisasi Leadership, Organizational Culture and Work Motivation : and Impact To Employee Productivity At PT. Telkom Indonesia Sukanumi (Studi Kasus Pada PT. Telkom Indonesia Sukabumi)”, Jurnal Adijaya Multidisplin, 2(04), hlm. 725–739. Tersedia pada: https://e-journal.naureendigition.com/index.php/jam/article/view/1544 (Diakses: 19 April 2026).