Wichainprapha, Areerat, and Kanitta Mekkamol. 2022. “The Effect of Health Literacy Development Program Among Primigravida on COVID-19 Prevention Behavior”. Journal of Phrapokklao Nursing College, Chanthaburi 33 (2). Chanthaburi, Thailand:246–259. https://he01.tci-thaijo.org/index.php/pnc/article/view/259695.