THE IMPACT OF NICOTINE AND CAFFEINE COMSUMPTION ON MENTAL HEALTH AND SLEEP QUALITY: A PSYCHOLOGICAL ASSESSMENT USING DASS-21 AND SLEEP QUALITY SCALE. IJIAP. 2024;2(5):1333:1349. Accessed September 12, 2026. https://psychopediajournals.com/index.php/ijiap/article/view/423