HARPER, Rowena. From principles to practice: Implementing an English language proficiency model at UniSA. Journal of Academic Language and Learning, [S. l.], v. 7, n. 2, p. A150-A164, 2013. Disponível em: https://www.journal.aall.org.au/index.php/jall/article/view/262. Acesso em: 9 apr. 2026.