D. Hardani, D. A. Saputra, D. Azura, and C. C. A. Amnora, “DIA-GUARD Herbal System: An Innovative Nano-Encapsulated Guava Leaf (Psidium guajava) Extract as a Natural Therapy to Inhibit Bacteria That Cause Diarrhea”, JCCPS, vol. 1, no. 1, pp. 20–25, May 2026.