Aiken Index Analysis to Determine The Contents Validity of Project Assessment Instrument in Learning Islamic Religion and Character in the Independent Curriculum. Jurnal Sustainable, [S. l.], v. 6, n. 2, p. 565–569, 2023. DOI: 10.32923/kjmp.v6i2.4043. Disponível em: https://rumahjurnal.iainsasbabel.ac.id/sus/article/view/4043. Acesso em: 14 nov. 2025.