I. Lichanporn, N. Nanthachai, P. Tanganurat, A. Singkhum, and P. Kromnongpai, “Effect of Pectin from Watermelon Rind on Quality of Roselle (Hibiscus sabdariffa L.) Jam”, J Appl Res Sci Tech, vol. 19, no. 1, pp. 64–73, Jun. 2020.