IRWAN, Muh. The Sir Model Introduction. Jurnal MSA ( Matematika dan Statistika serta Aplikasinya), [S. l.], v. 9, n. 2, p. 143–147, 2023. DOI: 10.24252/msa.v9i2.34838. Disponível em: https://journal.uin-alauddin.ac.id/index.php/msa/article/view/34838. Acesso em: 7 jun. 2025.