Sukardi, Sukardi, and Deny Ismanto. “Knowledge of COVID-19 and Online Purchase Intention: The Role of Health Protocol and Fulfilment”. Jurnal Siasat Bisnis 26, no. 2 (July 6, 2022): 197–209. Accessed March 28, 2024. https://journal.uii.ac.id/JSB/article/view/21179.