แก้วแปงจันทร์ ภักดี. “Relations Between the Timing of Birth and Obstetric Perineal Wound Infection”. Journal of Nakornping Hospital 8, no. 1 (July 15, 2019): 15–24. Accessed May 21, 2024. https://he01.tci-thaijo.org/index.php/jnkp/article/view/205214.