Putri, Marisa Dwi, Dwi Putro Tejo Baskoro, Suria Darma Tarigan, and Enni Dwi Wahjunie. “Characteristics of Several Soil Properties in Various Slope Position and Land Use in Upper Ciliwung Watershed: Karakteristik Beberapa Sifat Tanah Pada Berbagai Posisi Lereng Dan Penggunaan Lahan Di DAS Ciliwung Hulu”. Jurnal Ilmu Tanah dan Lingkungan 19, no. 2 (October 1, 2017): 81-85. Accessed February 25, 2021. http://jma.journal.ipb.ac.id/index.php/jtanah/article/view/27333.