KANIA, N.; KUSUMAH, Y. S.; DAHLAN, J. A.; NURLAELAH, E.; KYARUZI, F. Decoding Student Struggles in Geometry: Newman Error Analysis of Higher-Order Thinking Skills. International Journal of Geometry Research and Inventions in Education , [S. l.], v. 1, n. 1, p. 31–47, 2024. DOI: 10.56855/gradient.v1i01.1146. Disponível em: https://journals.eduped.org/index.php/Gradient/article/view/1146. Acesso em: 16 oct. 2025.