Tadngoen R, Mangkhang C, Saenbutr S. Guidelines for Integrative Environmental Learning to Enhance Environmental Citizenship Skills of Secondary Stu-dents at Udomdarunee School. Trends Humanit Soc Sci Res [Internet]. 2021 Sep. 28 [cited 2024 Apr. 20];9(2):53-71. Available from: https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/222373