Pratami, Diah, Desmiaty, Yesi, Simorangkir, Evita, AND Faradhila, Deby. " Standardization and Antioxidant Activity of Propolis Extract for SARS-CoV2 Infection Therapy" JURNAL ILMU KEFARMASIAN INDONESIA [Online], Volume 19 Number 2 (31 October 2021)