Methakawin Treetrong และ Sudtawin Krainara. (2024) Prediction of Successful Normal Vaginal Delivery by Intrapartum Transperineal Ultrasonographic Measurement of the Angle of Progression. <i>Thai Journal of Obstetrics and Gynaecology</i>, <i>32</i>(3), 205-213.Methakawin Treetrong และ Sudtawin Krainara. "Prediction of Successful Normal Vaginal Delivery by Intrapartum Transperineal Ultrasonographic Measurement of the Angle of Progression". Thai Journal of Obstetrics and Gynaecology 32 (2024):205-213.Methakawin Treetrong และ Sudtawin Krainara. Prediction of Successful Normal Vaginal Delivery by Intrapartum Transperineal Ultrasonographic Measurement of the Angle of Progression. PIMDEE Co. Ltd.:ม.ป.ท. 2024.