Chanchula, N., C. Fongsuk, P. Na-Nakorn, and K. Pansuksan. “Colchicine Determination in Gloriosa spp. by HPLC”. Science & Technology Asia, vol. 26, no. 2, June 2021, pp. 120-7, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/214072.