Riyanto, Adam Fakhrizi, Arlin Arda Safitri, Bagas Vitria Nugroho, Delia Prandita, and Rani Lisdiyowati. 2022. “Pengaruh Naik Turunnya Indeks Harga Saham Gabungan (IHSG) Terhadap Tingginya Lonjakan Kasus Virus Covid-19 Varian Delta Pada Pt HM Sampoerna Tbk”. SNHRP 4 (June). Indonesia:580-90. https://snhrp.unipasby.ac.id/prosiding/index.php/snhrp/article/view/363.