Purba, Endang Christine, and Jer-Ming Hu. “Traditional Medicine and Medicinal Plants of the Batak Karo: A Review of Ethnobotanical Studies and Research Gaps”. Ethnobotany Research and Applications 32 (December 21, 2025): 1–162. Accessed December 22, 2025. https://ethnobotanyjournal.org/index.php/era/article/view/7285.