G. A. A. Almajid, R. Rusli, and M. Priastomo, “Pengaruh Pelarut, Suhu, dan pH Terhadap Pigmen Antosianin dari Ekstrak Kulit Buah Naga Merah (Hylocereus Polyrhizus): Effect of Solvent, Temperature, and pH on Anthocyanin Pigments from Red Dragon Fruit Peel Extract (Hylocereus Polyrhizus)”, Proc. Mul. Pharm. Conf., vol. 14, no. 1, pp. 179–185, Dec. 2021.