Leelahawonge, C., and N. Pongsilp*. “Phosphatase Activities of Root-nodule Bacteria and Nutritional Factors Affecting Production of Phosphatases by Representative Bacteria from Three Different Genera”. CURRENT APPLIED SCIENCE AND TECHNOLOGY, vol. 9, no. 2, Mar. 2018, pp. 65-83, https://li01.tci-thaijo.org/index.php/cast/article/view/137197.