Purnomo, R. Wahyuniarto, Arik Prasetya, and Ika Ruhana. “Investigating the Core Variables of Employee Performance: A PRISMA Systematic Review”. KnE Social Sciences 10, no. 13 (June 25, 2025): 250–264. Accessed September 4, 2025. https://knepublishing.com/index.php/KnE-Social/article/view/18965.