Rijal, S., Saleh, M. B., Jaya, I. N. S., & Tiryana, T. (2016). Deforestation Profile of Regency Level in Sumatra. International Journal of Sciences: Basic and Applied Research (IJSBAR), 25(2), 385-402. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/5243