SIMBOLON, Ganda Agustina Hartati; SITOHANG, Ns. Tiur Romatua; SILALAHI, Elny Lorensi. Comparative Study: Yoga and Pregnancy Exercise on First Stage Pain and Length of Labor in Tapanuli Regency. Jurnal Penelitian Pendidikan IPA, [S. l.], v. 9, n. 10, p. 7950–7957, 2023. DOI: 10.29303/jppipa.v9i10.5308. Disponível em: https://jppipa.unram.ac.id/index.php/jppipa/article/view/5308. Acesso em: 30 jun. 2024.