“MARKETING ANALYSIS OF KEMENYAN (Styrax spp.) SIMARIGUNG VILLAGE (Case Study Simarigung Village, Dolok Sanggul District, Humbang Hasundutan Regency)”. 2017. Jurnal Ilmu Ilmu Kehutanan 1 (2): 39-45. https://jiik.ejournal.unri.ac.id/index.php/JIIK/article/view/34.