RAJA, Hakiki Sandhika; MAGDHALENA, Stephani. TWITTER SENTIMEN GOJEK INDONESIA DAN GRAB INDONESIA. Prosiding Seminar Nasional Matematika dan Statistika, [S.l.], p. 256-261, may 2019. ISSN 2657-232X. Available at: <http://jurnal.fmipa.unmul.ac.id/index.php/SNMSA/article/view/557>. Date accessed: 14 july 2020.