WILLYARTO, Mario Nugroho. Learning Polygons using English Language. Humaniora, [S. l.], v. 8, n. 4, p. 391–398, 2017. DOI: 10.21512/humaniora.v8i4.4102. Disponível em: https://journal.binus.ac.id/index.php/Humaniora/article/view/4102. Acesso em: 4 jul. 2025.