KHOFIFAH, Khofifah; ROSYADI, Rosyadi; GUNADI, Farid; NANDANG, Nandang; RUNISAH, Runisah. Students’ Difficulties In Solve Trigonometry Problem Solving According To Step Polya’s. Mathline : Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 9, n. 3, p. 919–946, 2024. DOI: 10.31943/mathline.v9i3.571. Disponível em: http://mathline.unwir.ac.id/index.php/Mathline/article/view/571. Acesso em: 17 jan. 2026.