UYUN, Qurrotul; HOLISIN, Iis; KRISTANTI, Febriana. Pengembangan Media Handout Segitiga dengan Model Problem Based Instruction. MUST: Journal of Mathematics Education, Science and Technology, [S. l.], v. 2, n. 1, p. 115–128, 2017. Disponível em: https://journal.um-surabaya.ac.id/matematika/article/view/546. Acesso em: 15 jan. 2025.