LUMENTA, F. M.; SURISTA, A.; KURNIA, A. Four square method for improving students’ writing ability in EF Teens & Kids Kalimalang. ETUDE: Journal of Educational Research, [S. l.], v. 1, n. 1, p. 1–6, 2020. DOI: 10.56724/etude.v1i1.5. Disponível em: https://alejournal.com/index.php/etude/article/view/5. Acesso em: 22 jun. 2025.