Priyono, Achmad. “The Influence of Covid-19 Daily Cases, World Oil Prices, World Gold Prices And Rupiah Exchange Rates”. Jurnal Manajemen Strategi dan Aplikasi Bisnis 5, no. 1 (January 24, 2022): 1-16. Accessed November 13, 2025. https://ejournal.imperiuminstitute.org/index.php/JMSAB/article/view/427.