Hikmatullah, ., and . Sukarman. “Physical and Chemical Properties of Cultivated Peat Soils in Four Trial Sites of ICCTF in Kalimantan and Sumatra, Indonesia”. JOURNAL OF TROPICAL SOILS 19, no. 3 (October 1, 2015): 131–141. Accessed July 14, 2025. https://journal.unila.ac.id/index.php/tropicalsoil/article/view/209.