Septiyana, ., A. Sutandi, and L. T. Indriyati. “Effectivity of Soil Amelioration on Peat Soil and Rice Productivity”. JOURNAL OF TROPICAL SOILS, vol. 22, no. 1, Jan. 2017, pp. 11-20, doi:10.5400/jts.2017.v22i1.11-20.