ATABIK ATABIK; KHAFIFATUL FIAN. Analysis of the Islamic Religious Education Achievement Test Instrument Using Microsoft Office Excel 2019 : Spearman-Brown Reliability Test. Al-Tatawur: International journal of Social Science, [S. l.], v. 3, n. 3, p. 49–56, 2025. DOI: 10.61806/al-tatawur.v3i3.66. Disponível em: https://tijosc.org/index.php/Al-Tatawur/article/view/66. Acesso em: 4 sep. 2025.