I. Lichanporn, N. Nanthachai, P. Tanganurat, and P. Akkarakultron, “Effect of Concentrated Chaya (Cnidoscolus chayamansa) Vegetable Juice on Quality of Reduced Sugar Roselle Jam”, J Appl Res Sci Tech, vol. 20, no. 2, pp. 1–11, Sep. 2021.