ศักดิ์สง่าวงษ์ สมบัติ. 2018. “Risk factors and risk scores of cesarean delivery due to cephalopelvic disproportion at Kumpawapi Hospital”. Journal of Medicine and Health Sciences 25 (2):30-42. https://he01.tci-thaijo.org/index.php/jmhs/article/view/142878.