Affandi, G. R., C. Hadi, N. A. Fardana, and M. N. B. A. Rahman. “Adaptation and Validation of The Achievement Emotions Questionnaire Academic Boredom Subscale in Indonesian Islamic Boarding Schools”. Islamic Guidance and Counseling Journal, vol. 8, no. 2, Aug. 2025, doi:10.25217/0020258654400.