Purbaya, Muhammad Eka, et al. ā€œImplementation of N-Gram Methodology to Analyze Sentiment Reviews for Indonesian Chips Purchases in Shopee E-Marketplaceā€. Jurnal RESTI (Rekayasa Sistem Dan Teknologi Informasi), vol. 7, no. 3, June 2023, pp. 609-17, https://doi.org/10.29207/resti.v7i3.4726.