F. A. Kusumo, D. R. S. Saputro, and P. Widyaningsih, “SENTIMENT ANALYSIS OF REVIEWS ON X APPS ON GOOGLE PLAY STORE USING SUPPORT VECTOR MACHINE AND N-GRAM FEATURE SELECTION”, BAREKENG: J. Math. & App., vol. 19, no. 2, pp. 1037-1046, Apr. 2025.