ERLIWATI, E.; TIMOR, A. R.; YUSA, Y. P. . Rancang Bangun Alat Penghitung Detak Jantung Janin. Jurnal Teknik, Komputer, Agroteknologi Dan Sains, [S. l.], v. 2, n. 1, p. Page 98–103, 2023. DOI: 10.56248/marostek.v2i1.96. Disponível em: https://marostek.marospub.com/index.php/journal/article/view/96. Acesso em: 19 sep. 2024.