Wijittaporn Somchai และ Buranee Kanchanatawan. (2024) Stress of grade 9 students taking an extra coursefor the admission examination of Triam UdomSuksa School and Mahidol Wittayanusorn School. <i>Journal of Medical Bioscience</i>, <i>6</i>(1), 71-82.Wijittaporn Somchai และ Buranee Kanchanatawan. "Stress of grade 9 students taking an extra coursefor the admission examination of Triam UdomSuksa School and Mahidol Wittayanusorn School". Journal of Medical Bioscience 6 (2024):71-82.Wijittaporn Somchai และ Buranee Kanchanatawan. Stress of grade 9 students taking an extra coursefor the admission examination of Triam UdomSuksa School and Mahidol Wittayanusorn School. Faculty of Medicine Chulalongkorn University:ม.ป.ท. 2024.