Putri, Dewi Melisa, and Yulian Findawati. “Text Preprocessing on Emotional Tweets Case Study: Covid-19 Vaccine Rejection: Text Preprocessing Pada Tweet Emosi Studi Kasus : Penolakan Vaksin Covid-19 ”. Procedia of Engineering and Life Science 5 (March 14, 2024): 446–453. Accessed June 16, 2025. https://pels.umsida.ac.id/index.php/PELS/article/view/1501.