Pertiwi, Astri, Agung Triayudi, and Endah Tri Esti Handayani. 2020. “Sentiment Analysis of the Impact of Covid-19 on Indonesia’s Economy through Social Media Using the ANN Method: Sentiment Analysis of the Impact of Covid-19 on Indonesia’s Economy through Social Media Using the ANN Method”. Jurnal Mantik 4 (1):605-12. https://www.ejournal.iocscience.org/index.php/mantik/article/view/789.