แซ่ตั้น ช, กาละ ศ, ยังวนิชเศรษฐ ส. Effect of Positive Thinking and Relaxation Program on Reducing Stress among Pregnant Adolescents. Pnu Sci J [Internet]. 2018 Jan. 15 [cited 2024 Apr. 30];10(1):27-39. Available from: https://li01.tci-thaijo.org/index.php/pnujr/article/view/109337