MURNI, Murni. Using Open Ended Approach in Learning to Improve Students Thinking Skill in Banda Aceh. International Journal of Independent Research Studies, [S. l.], v. 2, n. 2, p. 95–101, 2013. Disponível em: https://ecsenet.com/index.php/2304-6953/article/view/656. Acesso em: 15 nov. 2025.