OKIGBO, E. C.; ONOSHAKPOKAIYE, O. E. Relationship between Academic Self-Concept and Academic Performance in Mathematics of Secondary School Students in Delta State, Nigeria. Indonesian Journal of Mathematics Education, [S. l.], v. 6, n. 2, p. 63–71, 2023. DOI: 10.31002/ijome.v6i2.991. Disponível em: https://journal.untidar.ac.id/index.php/ijome/article/view/991. Acesso em: 22 may. 2024.