CALAMINOS, Franklin. Development and Content Validation of Modular Textbook on Mathematics in the Modern World at Sorsogon State University, Sorsogon, Philippines. EDUCATUM Journal of Science, Mathematics and Technology, [S. l.], v. 11, n. 1, p. 36–42, 2024. DOI: 10.37134/ejsmt.vol11.1.5.2024. Disponível em: https://ejournal.upsi.edu.my/index.php/EJSMT/article/view/8658. Acesso em: 14 may. 2025.