AL-MAHROUQI, Mohammed. Psychological happiness and its relation to the achievement of students in grades 9 and 10 In Adam State/ AI-Dakhilia Governorate. . Ibn Khaldoun Journal for Studies and Researches, فلسطين, v. 5, n. 8, 2025. DOI: 10.56989/benkj.v5i8.1536. Disponível em: https://benkjournal.com/index.php/benkj/article/view/1536. Acesso em: 23 apr. 2026.