Kosasih, Sofia Winnie, Terip Karo-Karo, and Nauas Domu Marihot Romauli. “Papaya Peel Extract and Citric Acid Addition on the Quality of Guava Jelly”. Indonesian Journal of Agricultural Research 6, no. 3 (February 6, 2024): 168 - 181. Accessed May 13, 2024. https://talenta.usu.ac.id/InJAR/article/view/11367.