“EFEKTIFITAS DEEP BACK MASSAGE DAN COUNTERPRESSURE MASSAGE TERHADAP INTENSITAS NYERI PERSALINAN KALA I FASE AKTIF DI PMB YUSNIMAR KOTA PEKANBARU TAHUN 2019”, JIA, vol. 13, no. 2, May 2020, Accessed: Jan. 10, 2026. [Online]. Available: https://jurnal.polkesri.ac.id/index.php/JIA/article/view/225