Isnaningsih T, Hanna Firlyana. THE The Correlation Between Sleep Quality and Stress Levels with Learning Achievement in Adolescents at Mts Saintek Nurul Qur’an Hdwr in 2026. MODERN [Internet]. 2026 Jun. 2 [cited 2026 Jun. 2];5(3):465-74. Available from: https://journalmodern.my.id/index.php/MODERN/article/view/40