LOZANO, J. N.; LABRO, J. Age of Entry as Determinant of Achivement in The Elementary Grades: A Comparative Study. SSU - Digital Archive for Theses and Dissertations, [S. l.], v. 18, n. 1, p. 1–114, 2022. Disponível em: https://datd.ssu.edu.ph/index.php/datd/article/view/157. Acesso em: 2 sep. 2025.