Putri, Dewi Melisa, and Yulian Findawati. “Text Preprocessing on Emotional Tweets Case Study: Covid-19 Vaccine Rejection”. Procedia of Engineering and Life Science 50 (March 14, 2024): 446-453. Accessed November 21, 2024. https://pels.umsida.ac.id/index.php/PELS/article/view/1501.