A. P. Sari, M. Iqbal, I. D. Rahayu, and R. Triyandi, “Perbandingan Kadar Antioksidan Kopi Robusta (Coffea canephora) dan Kopi Arabika (Coffea arabica)”, J. Agromedicine Unila, vol. 10, no. 1, pp. 61–64, Feb. 2023.