THE EFFECT OF HYPNOBIRTHING ON THE LENGTH OF THE FIRST STAGE OF LABORAT PMB PEKANBARU CITY. JURNAL IBU DAN ANAK [Internet]. 30 November 2022 [dikutip 17 Januari 2026];10(2):119-23. Tersedia pada: https://jurnal.pkr.ac.id/index.php/JIA/article/view/629