Purwarini, Justina. “The Relationship of Pharmacological Intrathecal Labor Analgesia in Normal Delivery With the Stability of Vital Sign of Newborn”. British Journal of Healthcare and Medical Research 9, no. 2 (March 24, 2022): 22–30. Accessed December 3, 2024. http://804474.wannyin.cyou/index.php/JBEMi/article/view/11960.