Thungthin, Pailin, Nonglak Chaloumsuk, and Bungorn Supavititpatana. 2023. “Effect of the Sleep Enhancement Program on Sleep Quality among Pregnant Women”. Journal of Phrapokklao Nursing College, Chanthaburi 34 (1). Chanthaburi, Thailand:172–187. https://he01.tci-thaijo.org/index.php/pnc/article/view/261368.