SIHOTANG, I.; SITEPU, M.; RUSDA, M. Descent of Fetal Head into The Pelvic Inlet in Primigravida: Systematic Review . Sumatera Medical Journal, [S. l.], v. 4, n. 2, 2021. DOI: 10.32734/sumej.v4i2.5845. Disponível em: https://talenta.usu.ac.id/smj/article/view/5845. Acesso em: 4 aug. 2025.