สุนทรกิจ ว, บุญปู่ ส, แก้วทองใหญ่ ย. A Study of Organizing Activities to Promote Volunteer Spirit of Secondary School Students in Chomthong District of Bangkok. MGSJ [Internet]. 2021 Jun. 30 [cited 2024 May 7];19(1):13. Available from: https://so04.tci-thaijo.org/index.php/mgsj/article/view/252396