KUAN, W. L. Students’ Perception of the CoI-based Online Flipped Approach: Learning Mandarin as a Foreign Language. Human Behavior, Development and Society, [S. l.], v. 23, n. 3, p. 98–107, 2022. Disponível em: https://so01.tci-thaijo.org/index.php/hbds/article/view/262279. Acesso em: 16 sep. 2026.