R. S. Ningrum, A. Ramadani, R. Rosalina, D. Yustiyani, and R. A. Reyzando, “Preparation and Antifungal Activities of Chitosan from Apple-Snail (Pila Ampullacea) Shells as Preserving Agent for Postharvest Podang Mango (Mangifera Indica L.) Cv Podang”, IJAR, vol. 2, no. 2, pp. 66-78, Aug. 2021.