UMMAH, Kholifatul; KHAIROH, Mifatahul. Efektivitas Endorphine Massage terhadap Penurunan Nyeri Punggung pada Ibu Hamil Trimester III di PMB Sri Rahayu, S.Tr.Keb. Surabaya. JURNAL ILMIAH OBSGIN : Jurnal Ilmiah Ilmu Kebidanan & Kandungan P-ISSN : 1979-3340 e-ISSN : 2685-7987, [S. l.], v. 13, n. 4, p. 226–234, 2021. DOI: 10.36089/job.v13i4.1672. Disponível em: https://www.ojsnhm.com/index.php/JOB/article/view/1672. Acesso em: 8 aug. 2026.