AKGUN, N.; GUL, S. Developing an Achievement Test on the Subject of ‘Circulatory System’ for Sixth Graders. Science Insights Education Frontiers, [S. l.], v. 20, n. 2, p. 3247–3262, 2024. DOI: 10.15354/sief.24.or526. Disponível em: https://bonoi.org/index.php/sief/article/view/1189. Acesso em: 25 oct. 2025.