ชัยสิทธิ์สงวน ก. (2018) “Prolonged Latent Phase of Labor : The Midwifery Roles”, Journal of The Royal Thai Army Nurses, 19, pp. 33–41. available at: https://he01.tci-thaijo.org/index.php/JRTAN/article/view/156014 (accessed: 20 September 2026).