BUDAIRI, A. IMPROVING THE STUDENT’S VOCABULARY MASTERY BY USING CONSTRUCTIVISM PRINCIPLE IN THE SECOND YEAR STUDENTS OF SMAN 1 KAUMAN. Efektor, [S. l.], v. 4, n. 1, p. 24–30, 2017. DOI: 10.29407/e.v4i1.741. Disponível em: https://ojs.unpkediri.ac.id/index.php/efektor-e/article/view/741. Acesso em: 22 jan. 2025.