Manusirivithaya, Sumonmal. “Thai Journal of Obstetrics and Gynaecology: Impact Factor”. Thai Journal of Obstetrics and Gynaecology 20, no. 1 (April 28, 2012): 1–2. accessed September 29, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/1202.