Herlina, Rima, and Setiawati Siburian. “Conservation and Sustainable Use of Gaharu Producing Plants”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 32, no. 1 (March 2, 2017): 238–246. Accessed September 11, 2025. https://gssrr.org/JournalOfBasicAndApplied/article/view/6948.