SMITH, George; AMIRUDIN ICHDA, Mochammad; ALFAN, Muhammad; KUNCORO, Tri. Literacy Studies: Implementation of Problem-based Learning Models to Improve Critical Thinking Skills in Elementary School Students. KnE Social Sciences, [S. l.], v. 8, n. 10, p. 222–233, 2023. DOI: 10.18502/kss.v8i10.13449. Disponível em: https://knepublishing.com/index.php/KnE-Social/article/view/13449. Acesso em: 11 oct. 2025.