., Fitriani; UMAR, Kholid; PASARIBU, F; NOVITASARI, Wiwik; SOFYAN SAMOSIR, Beni; ., Yusmiati. Analysis of Difficulty Understanding Student Mathematica by Using Online Learning Model. KnE Social Sciences, [S. l.], v. 8, n. 4, p. 180–188, 2023. DOI: 10.18502/kss.v8i4.12898. Disponível em: https://knepublishing.com/index.php/KnE-Social/article/view/12898. Acesso em: 11 oct. 2025.