SARAGIH, Mariati; PANGGABEAN, Leben; GAOL, Desima B. Lumban; RAJAGUKGUK, Holmes. The Effect of the Concept Attainment Learning Model on Improving Persuasive Writing Ability in Eighth-Grade Students at Private Junior High School SRO Matiti. International Journal of Humanities and Education Development (IJHED), [S. l.], v. 7, n. 1, p. 12–20, 2025. DOI: 10.22161/jhed.7.1.2. Disponível em: https://theshillonga.com/index.php/jhed/article/view/425.. Acesso em: 19 jan. 2025.