Jurnal Ilmiah Nasional Berita Biologi Volume 8 Nomor 4 April 2007 : Akar Penyebab Deforestasi di Sekitar Sungai Pemerihan Perbatasan Taman Nasional Bukit Barisan Selatan, Lampung Barat [The Root Causes of Deforestation Near Pemerihan River Bordering Bukit Barisan Selatan National Park, West Lampung] - Suyadi (Wildlife Conservation Society - Indonesia Program, 2007)