Silalahi, M.Si, Dr. Marina. “BOTANI DAN BIOAKTIVITAS PULAI (Alstonia Scholaris)”. Jurnal Pro-Life 6, no. 2 (June 26, 2019): 136-147. Accessed November 25, 2024. http://ejournal.uki.ac.id/index.php/prolife/article/view/1019.