1.
Rattha K, Supucworakul C, Boontongtherng P. Development to Learning Analytical Thinking and Achievement in Geography of Students in Matthayomsuksa 2 by Using Problems-Based Learning Activities. JDSC [internet]. 2020 Dec. 14 [cited 2025 Dec. 12];7(2):59-74. available from: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/240662