M. Napitupulu, N. Nurhikma, D. K. Walanda, and D. Poba, “Effect of Solvent Differences on Flavonoid Levels and Antioxidant Activity of Hass Avocado Peel (Persea Americana Hass)”, J. Akademika Kimia, vol. 14, no. 1, pp. 51–57, Feb. 2025.