Wibowo, Rimun, Sjafri Mangkuprawira, Asep Saefuddin, and Sumarjo Gatot Irianto. “MODEL PENGENDALIAN MUTU LAHAN KERING BERBASIS PEMBERDAYAAN MASYARAKAT DI KABUPATEN PONOROGO”. Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) 2, no. 2 (December 30, 2012): 94. Accessed May 13, 2021. https://jma.journal.ipb.ac.id/index.php/jpsl/article/view/10653.