IDAKA, I.; IDAKA, E. From Classical Test Theory (CTT) to Item Response Theory (IRT) in Research Instrument. Lwati: A Journal of Contemporary Research, [S. l.], v. 11, n. 3, p. 36–44, 2015. DOI: 10.4314/lwati.v11i3. Disponível em: https://www.ajol.info/index.php/lwati/article/view/119740. Acesso em: 14 sep. 2026.