ILMIAH S., Himmatun. Critical-thinking Perspective in the Level C2 Sahabatku Indonesia Books. KnE Social Sciences, [S. l.], v. 5, n. 3, p. 117–129, 2021. DOI: 10.18502/kss.v5i3.8533. Disponível em: https://knepublishing.com/index.php/KnE-Social/article/view/8533. Acesso em: 28 oct. 2025.