Silitonga, R., I. Kuncahyo, and R. Harjanti. “Formulation of Antioxidant Serum Preparation Of Avocado Leaf Ethanol Extract (Persea Americana M.)”. Journal of Pharmaceutical Researchers, Vol. 3, no. 3, July 2025, pp. 34-42, doi:https://doi.org/10.31001/jpr.v2i3.2688.