Fixed and variable in building systems for brand design. Journal of the College of Basic Education, [S. l.], v. 21, n. 88, p. 289–314, 2023. DOI: 10.35950/cbej.v21i88.9930. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/9930.. Acesso em: 18 jul. 2024.