Lindriati, T., M. Belgis, M. Fauzi, Q. E. . Juwita, and S. Sakinah. “Ultrasound Assisted Extraction and Characterization of Pectin from Red Dragon Fruit (Hylocereus Polyrhizus) Peels”. Journal of Applied Agricultural Science and Technology, vol. 7, no. 2, May 2023, pp. 91-99, doi:10.55043/jaast.v7i2.76.