Ruksilp, T., N. Wongpriaw, T. Thammasom, N. Srichana, and W. Isaro. “Antioxidant Activities of Triterpenoids and Steroid from the Roots of Millettia utilis Dunn”. Asian Health, Science and Technology Reports, vol. 30, no. 3, Oct. 2021, pp. 44-50, doi:10.14456/nujst.2022.25.