A Brief History of ‘Square of Opposition’. Ajasraa ISSN 2278-3741 UGC CARE 1, [S. l.], v. 13, n. 6, p. 39–54, 2024. DOI: 10.7492/gx3rsd06. Disponível em: https://ajasra.in/index.php/about/article/view/488.. Acesso em: 2 jan. 2025.