Kuswanda, W. and Barus, S.P. 2017. Keanekaragaman dan Penetapan “Umbrella Species” Satwa liar Di Taman Nasional Gunung Leuser. Jurnal Penelitian Kehutanan Wallacea. 6, 2 (Aug. 2017), 113-123. DOI:https://doi.org/10.18330/jwallacea.2017.vol6iss2pp113-123.