Pratiwi, Yuharika, and Bintang Ramadhani. “Effectiveness Of Red Ginger Herbal Beverage As A Biomarker-Based Occupational Health Intervention On Blood Lactic Acid Levels Among Trans Metro Pekanbaru Bus Drivers With Low Back Pain”. International Journal of Health Engineering and Technology 5, no. 2 (July 18, 2026). Accessed July 26, 2026. https://www.afdifaljournal.com/journal/index.php/ijhet/article/view/1023.