Srikrua, Thatsanee, and Thanatchon Jangkhum. 2026. “Analysis of The Cost and Economic Returns in Rice Cultivation Investment for farmers in Derm Bang Nang Buat District, Suphan Buri Province”. Local Administration Journal 19 (2):155-69. https://so04.tci-thaijo.org/index.php/colakkujournals/article/view/286843.