Dung, Diem Thi Thuy, et al. “Second Metabolites and Antioxidant, Antimicrobial, Anticancer Activities of <i> Helicteres Hirsuta < i> Root Extract”. Academia Journal of Biology, vol. 40, no. 3, Nov. 2018, doi:10.15625/2615-9023/v40n3.12674.