Suswanto, T., J. Shamshuddin, S. S. Omar, P. Mat, and C. Teh. “Alleviating an Acid Sulfate Soil Cultivated to Rice (Oryza Sativa) Using Ground Magnesium Limestone and Organic Fertilizer”. Jurnal Ilmu Tanah Dan Lingkungan, Vol. 9, no. 1, Apr. 2007, pp. 1-9, doi:10.29244/jitl.9.1.1-9.