Zulvia R, Sitompul AJ. Mental Load Analysis Using NASA-TLX on Production Operators at PT. Cemindo Gemilang North Sumatra. JISS [Internet]. 2025 Jun. 29 [cited 2026 Apr. 18];6(6):2019-26. Available from: http://jiss.publikasiindonesia.id.solusipublish.com/index.php/jiss/article/view/1709