Khoomsab, Ruchira, and Kan Khoomsab. “Extraction and Determination of Anthraquinone from Herbal Plant As Bird Repellent”. Science & Technology Asia 24, no. 1 (February 8, 2019): 14–20. Accessed March 29, 2024. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/171195.