NGUYEN, Duy. A CORPUS-BASED SURVEY OF QUESTION TYPES IN ELEMENTARY VIETNAMESE TEXTBOOKS FOR FOREIGN LEARNERS. Ho Chi Minh City University of Education Journal of Science, [S. l.], v. 22, n. 6, p. 1150–1162, 2025. DOI: 10.54607/hcmue.js.22.6.5061(2025). Disponível em: https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/5061. Acesso em: 13 jan. 2026.