Evaluasi Potensi Jalur Trekking Hutan Pendidikan USU, Taman Hutan Raya Bukit Barisan, Kabupaten Karo (Evaluation of Potential Tracking Rute at Educational Forest of USU, Bukit Barisan Grand Forest Park, Regency of Karo) - Saragih, Devita; Alumni Program Studi Kehutanan, Fakultas Pertanian, Universitas Sumatera Utara, Jl. Tri Dharma Ujung No. 1 Kampus USU Medan 20155 (Program studi Kehutanan USU, 2013)