R. A. Ifadah, D. A. Putri, F. Lukitasari, S. Handajani, L. Nurlaela, and F. Nugraheni, “PHYSICAL CHARACTERISTICS OF WHITE BREAD WITH VARIOUS LEVELS OF PURPLE SWEET POTATO FLOUR SUBSTITUTION”, AGS, vol. 10, no. 1, pp. 48–56, Feb. 2026.