Chutvirasakul, B., T. Riangnam, W. Kunkamphon, and P. Ramakul. “Extraction of d-limonene from pomelo (Citrus maxima) peel waste using solvent-free microwave process and antioxidant activity analysis”. Science, Engineering and Health Studies, vol. 19, Nov. 2025, p. 25040008, doi:10.69598/sehs.19.25040008.