MORALES, M. P. E. Preliminaries. Asia Pacific Higher Education Research Journal (APHERJ), [S. l.], v. 4, n. 1, 2017. DOI: 10.56278/apherj.v4i1.441. Disponível em: https://www.po.pnuresearchportal.org/ejournal/index.php/apherj/article/view/441. Acesso em: 23 oct. 2026.