ANNOR, A. Identification of Difficulty in Resolving Problem Trigonometric Functions Limit in Class XI MA PIP (Islamic Education Parigi) Central of Habirau. Jurnal PTK dan Pendidikan, [S. l.], v. 2, n. 2, 2016. DOI: 10.18592/ptk.v2i2.1025. Disponível em: https://jurnal.uin-antasari.ac.id/index.php/ptkpend/article/view/1025. Acesso em: 21 nov. 2024.