Bukit, Niarita. “The Effect of Motivation, Work Environment, and Workload on Employee Performance at PDAM Tirtauli Pematang Siantar”. Eduvest - Journal of Universal Studies 2, no. 4 (April 19, 2022): 710–715. Accessed July 1, 2025. https://eduvest.greenvest.co.id/index.php/edv/article/view/429.