Ratanavirakul, P. ., S. . Thanachit, and S. . Anusontpornperm. “Effect of co-application of phosphate rock with organic wastes on P fractions in a tropical loamy sand soil”. Agriculture and Natural Resources, vol. 56, no. 1, Feb. 2022, pp. 85–94, https://li01.tci-thaijo.org/index.php/anres/article/view/253975.