CALAFF, K. P.; WILLNER, L. S.; GOTTLIEB, M.; KRAY, F. M. Using Proficiency Level Descriptors to Plan Instruction and Assess Multilingual Learners. WAESOL Educator, [S. l.], v. 47, n. 2, p. 30–34, 2024. Disponível em: https://educator.waesol.org/index.php/WE/article/view/134. Acesso em: 27 jul. 2026.