Sulistiyono, Nurdin, I Nengah Surati Jaya, Lilik Budi Prasetyo, and Tatang Tiryana. “Spatial Model of Deforestation in Sumatra Islands Using Typological Approach”. Jurnal Manajemen Hutan Tropika 21, no. 3 (December 31, 2015): 99-109. Accessed November 30, 2021. https://jma.journal.ipb.ac.id/index.php/jmht/article/view/10790.