N. E. Khosyiati, R. J. Setiawan, K. Ma’ruf, N. Azizah, and Darmono, “Utilization of Purple Sweet Potato (Ipomoea batatas ’Blackie’) as Raw Ingredient in Pizza Production”, JIPANG, vol. 7, no. 01, pp. 42-48, Mar. 2025.