Sirianni GR, Mendel K, Nagasawa EY, Schoffen JR. The outcomes of Acervo Celpe-Bras for teaching, learning, assessment and research in Portuguese as an Additional Language. BELT [Internet]. 2019 Aug. 1 [cited 2024 Apr. 19];10(1):e33233. Available from: https://revistaseletronicas.pucrs.br/ojs/index.php/belt/article/view/33233