Muhammad, Fakhri, Nana Mulyana Maghfur, and Apriade Voutama. “Sentiment Analysis Dataset on COVID-19 Variant News: Kumpulan Data Analisis Sentimen Pada Berita Varian COVID-19”. SYSTEMATICS 4, no. 1 (March 21, 2022): 382–391. Accessed May 2, 2024. https://journal.unsika.ac.id/index.php/systematics/article/view/6347.