“H Hypnobirthing On The Long Time Of Active Phase I In Labor: Literature Review: Hypnobirthing Terhadap Lama Kala I Fase Aktif Pada Persalinan: Literature Review” (2022) Proceeding Of Sari Mulia University Midwifery National Seminars, 4(1), pp. 339–344. doi:10.33859/xsyxrf21.