Yati, Lasmini, et al. “MINUMAN SERBUK INSTAN DARI KULIT BUAH NAGA DENGAN FORMULASI ASAM DAN BASA YANG BERBEDA: Instant Powder Drink from Dragon Fruit Peel With Different Formulation of Acid and Base”. Agroindustrial Technology Journal, vol. 6, no. 1, May 2022, pp. 24-34, https://atj.journal.unida.gontor.ac.id/index.php/atj/article/view/93.