ไชยศร ว. “Isolation of Phosphate Solubilizing Bacteria from Soil and Optimization for Groeth and Phosphate Solubilization”. Wichcha Journal Nakhon Si Thammarat Rajabhat University, vol. 36, no. 2, Dec. 2017, pp. 11-24, https://li01.tci-thaijo.org/index.php/wichcha/article/view/106027.