1.
Talason P, Cojorn K. The Development of Problem-solving Ability and Learning Achievement in Chemistry Subject of Mathayomsuksa 6 Students. Journal of Roi Et Rajabhat University [Internet]. 29Apr.2019 [cited 27Jun.2019];13(1):3-5. Available from: https://www.tci-thaijo.org/index.php/reru/article/view/185874