Vu, Thu Trang, Thi Thao Nguyen Nguyen, Van Hung Nguyen, Tien Cuong Nguyen, Quoc Tuan Hoang, Thi Thao Nguyen, Thi Hanh Nguyen, et al. “Stability of Betacyanin in Red Dragon Fruit (Hylocereus Polyrhizus) Juice Obtained from Lap Thach, Vinh Phuc Province”. Old Journal, no. 140 (January 15, 2020): 71–76. Accessed August 2, 2025. https://jst.vn/index.php/old/article/view/570.