ningsih, Fitri Susilawati, and Anis Turmudhi. “Do Internal Factors Improve Employee Performance?”. Adpebi International Journal of Multidisciplinary Sciences 3, no. 2 (October 21, 2024): 172–182. Accessed July 6, 2025. https://www.journal.adpebi.com/index.php/AIJMS/article/view/1039.