Yudiarso, Ananta, Ista Wirya Ardhiani, Roy Surya, Ferry Yohannes Watimena, and Mami Kanzaki. “Psychometric Properties of the 18-Item Indonesian Mental Toughness Questionnaire Using the Rasch Model and Machine Learning”. Psikohumaniora: Jurnal Penelitian Psikologi 10, no. 1 (May 8, 2025). Accessed May 14, 2025. https://journal.walisongo.ac.id/index.php/Psikohumaniora/article/view/23214.