Yudha, Yusuf Hadi. “Penerapan Model Polytomous Item Response Theory Untuk Mengevaluasi Skala Student’s Perception Of Assessment Questionnaire”. Jurnal Ilmiah Psikologi MIND SET 2, no. 01 (May 15, 2019): 28 - 52. Accessed May 6, 2024. https://journal.univpancasila.ac.id/index.php/mindset/article/view/208.