Wahyuni, Retno, and Udur Hotlan Maria Sianturi. “The Effect of Health Education on Childbirth on Third Trimester Primigravida Anxiety in Public Health Center Matiti in Humbang Hasundutan District 2022”. Science Midwifery 10, no. 4 (October 30, 2022): 3365–3368. Accessed April 17, 2026. https://midwifery.iocspublisher.org/index.php/midwifery/article/view/831.