PANJAITAN, H. R.; SIHALOHO, B.; SIMAMORA, L. Sosialisasi Pengembangan Modul Ajar Matematika pada Materi Trigonometri di SMK Parulian 1 Medan. Abdi Cendekia : Jurnal Pengabdian Masyarakat, [S. l.], v. 2, n. 2, p. 144–149, 2023. DOI: 10.61253/abdicendekia.v2i2.173. Disponível em: https://zia-research.com/index.php/abdicendekia/article/view/173. Acesso em: 1 mei. 2026.