“Aktivitas Antioksidan Produk Kopi Dan Teh Di Kota Samarinda: Antioxidant Activity of Coffee and Tea Products in Samarinda City”. Jurnal Sains Dan Kesehatan, vol. 3, no. 3, June 2021, pp. 488-91, https://jsk.ff.unmul.ac.id/index.php/JSK/article/view/264.